{"kind": "product", "path": "vulns/debian-12/python-tornado", "name": "python-tornado", "product": "python-tornado", "ecosystem": "Debian:12", "items": [{"id": "CVE-2026-103263", "noindex": false, "published": "2026-10-01T10:42:05.609Z", "modified": "2026-10-01T19:29:47.547Z", "cvss": 8.2, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.00522, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-103263", "title": "Tornado before 6.5.9 StaticFileHandler Path Traversal via Symlink", "description": "Tornado before 6.5.9 contains a path traversal vulnerability in StaticFileHandler that follows symbolic links inside the static root without confirming the resolved target stays within it. When a symlink pointing outside the static directory exists inside it, unauthenticated attackers can request it to read files such as configuration files, private keys, and application secrets accessible to the process user.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-c2m8-h5v5-343r", "https://github.com/tornadoweb/tornado/commit/437ab5f76565403b3403438d2e555d11f8128d32", "https://www.vulncheck.com/advisories/tornado-before-6.5.9-staticfilehandler-path-traversal-via-symlink"], "fixes": [], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2026-103262", "noindex": false, "published": "2026-10-01T10:42:04.913Z", "modified": "2026-10-06T00:08:58.078Z", "cvss": 8.7, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.00628, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-103262", "title": "Tornado before 6.5.9 Denial of Service via CurlAsyncHTTPClient", "description": "Tornado versions before 6.5.9 contain an unbounded memory accumulation vulnerability in CurlAsyncHTTPClient that allows remote attackers to cause denial of service by sending a compressed response. Attackers can send a gzip-encoded decompression bomb that accumulates in memory without size limits, causing the application process to be killed by out-of-memory conditions.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-chx6-46f5-w4vp", "https://github.com/tornadoweb/tornado/commit/e412435febba4569c552c5c9054f1bf92bd171a9", "https://www.vulncheck.com/advisories/tornado-before-6.5.9-denial-of-service-via-curlasynchttpclient"], "fixes": [], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2026-103261", "noindex": false, "published": "2026-10-01T10:42:04.230Z", "modified": "2026-10-01T14:44:26.683Z", "cvss": 6.9, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N", "severity": "medium", "epss": 0.00467, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-103261", "title": "Tornado before 6.5.9 Denial of Service via Query String", "description": "Tornado before 6.5.9 fails to limit the number of query string fields in HTTPServerRequest.__init__, allowing remote attackers to cause event-loop stalling by sending requests with thousands of query parameters. Attackers can send unauthenticated GET requests with unbounded query-string field counts to degrade response times for all clients sharing the same IOLoop.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-3hv7-mjh2-fv65", "https://github.com/tornadoweb/tornado/commit/03945136ea9746eccf61caf88edae39642e59c93", "https://www.vulncheck.com/advisories/tornado-before-6.5.9-denial-of-service-via-query-string"], "fixes": [], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2026-91992", "noindex": false, "published": "2026-09-15T15:18:33.089Z", "modified": "2026-09-17T15:16:30.401Z", "cvss": 8.2, "cvss_vector": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.00239, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-91992", "title": "Tornado before 6.5.7 Credential Leak via Handle Reuse", "description": "Tornado before 6.5.7 contains a credential leak vulnerability in CurlAsyncHTTPClient where pycurl handles are reused across requests without proper state clearing. Attackers can obtain sensitive credentials by issuing requests through the same client instance, allowing TLS certificates or proxy authentication to persist across unintended requests.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-pw6j-qg29-8w7f", "https://www.vulncheck.com/advisories/tornado-before-6.5.7-credential-leak-via-handle-reuse", "https://nvd.nist.gov/vuln/detail/CVE-2026-91992"], "fixes": [], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2026-91991", "noindex": false, "published": "2026-09-15T15:18:32.408Z", "modified": "2026-10-08T15:26:01.123Z", "cvss": 6.3, "cvss_vector": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N", "severity": "medium", "epss": 0.00247, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-91991", "title": "Tornado before 6.5.8 Cookie Attribute Injection via Capitalized kwargs", "description": "Tornado before 6.5.8 contains an incomplete fix for cookie attribute injection that allows attackers to inject arbitrary cookie attributes by passing capitalized or legacy keyword arguments to set_cookie. Attackers can embed semicolon-delimited data in capitalized parameters like Domain, Path, or SameSite to bypass validation and modify cookie security attributes.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-wwv5-g3v4-889x", "https://www.vulncheck.com/advisories/tornado-before-6.5.8-cookie-attribute-injection-via-capitalized-kwargs", "https://nvd.nist.gov/vuln/detail/CVE-2026-91991"], "fixes": [], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2026-91990", "noindex": false, "published": "2026-09-15T15:18:31.715Z", "modified": "2026-09-15T16:05:11.528Z", "cvss": 8.7, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.00424, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-91990", "title": "Tornado before 6.5.8 Memory Amplification DoS via multipart", "description": "Tornado before 6.5.8 contains a memory amplification vulnerability in parse_multipart_form_data that splits multipart data before validating the max_parts limit. Attackers can send crafted multipart requests with many parts to create large transient lists, exhausting server memory and causing denial of service.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-8423-8fgw-73vq", "https://www.vulncheck.com/advisories/tornado-before-6.5.8-memory-amplification-dos-via-multipart", "https://nvd.nist.gov/vuln/detail/CVE-2026-91990"], "fixes": [], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2024-58384", "noindex": false, "published": "2026-09-15T15:17:53.619Z", "modified": "2026-09-17T19:29:06.047Z", "cvss": 6.3, "cvss_vector": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N", "severity": "medium", "epss": 0.00249, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2024-58384", "title": "Tornado before 6.4.1 CRLF Injection via CurlAsyncHTTPClient", "description": "Tornado before 6.4.1 contains a CRLF injection vulnerability in CurlAsyncHTTPClient that fails to reject carriage return and line feed characters in request headers. Attackers can inject CRLF sequences into header values to inject arbitrary headers or construct entirely new HTTP requests.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-w235-7p84-xx57", "https://www.vulncheck.com/advisories/tornado-before-6.4.1-crlf-injection-via-curlasynchttpclient", "https://nvd.nist.gov/vuln/detail/CVE-2024-58384"], "fixes": [], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2024-14029", "noindex": false, "published": "2026-09-15T15:17:52.942Z", "modified": "2026-09-15T17:09:00.298Z", "cvss": 9, "cvss_vector": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N", "severity": "critical", "epss": 0.00361, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2024-14029", "title": "Tornado before 6.4.1 HTTP Request Smuggling via Transfer-Encoding", "description": "Tornado before 6.4.1 ignores duplicate Transfer-Encoding: chunked headers, treating requests as having no message body and parsing the chunked body as a subsequent request. Attackers can exploit this inconsistency when Tornado is deployed behind proxies to perform HTTP request smuggling, enabling access control bypass, cache poisoning, or connection desynchronization.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-753j-mpmx-qq6g", "https://www.vulncheck.com/advisories/tornado-before-6.4.1-http-request-smuggling-via-transfer-encoding", "https://nvd.nist.gov/vuln/detail/CVE-2024-14029"], "fixes": [], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2023-54397", "noindex": false, "published": "2026-09-15T15:17:52.261Z", "modified": "2026-09-17T14:48:55.089Z", "cvss": 9, "cvss_vector": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N", "severity": "critical", "epss": 0.00377, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2023-54397", "title": "Tornado before 6.3.3 HTTP Request Smuggling via Content-Length", "description": "Tornado before 6.3.3 contains an HTTP request smuggling vulnerability due to improper parsing of Content-Length headers accepting non-standard characters. Attackers can send crafted HTTP requests with these characters to bypass proxy validation and smuggle requests when deployed behind certain proxies.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-qppv-j76h-2rpx", "https://www.vulncheck.com/advisories/tornado-before-6.3.3-http-request-smuggling-via-content-length", "https://nvd.nist.gov/vuln/detail/CVE-2023-54397"], "fixes": [], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2026-82397", "noindex": false, "published": "2026-08-31T21:28:13.958Z", "modified": "2026-09-02T17:39:41.238Z", "cvss": 7.5, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "severity": "high", "epss": 0.00346, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-82397", "title": "Tornado: Urlencoded body parsing omits max_num_fields, so one request can stall the event loop", "description": "Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.8, Tornado parses application/x-www-form-urlencoded request bodies with urllib.parse.parse_qs in tornado/escape.py without passing max_num_fields. RequestHandler._execute in tornado/web.py parses the body before handler dispatch through HTTPServerRequest._parse_body and parse_body_arguments in tornado/httputil.py, so an unauthenticated request body containing millions of separator-delimited fields can synchronously stall the single-threaded event loop and delay every connection. The body is bounded only by max_buffer_size, which defaults to 104857600 bytes. Th", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-mpf4-983q-p7j4", "https://github.com/tornadoweb/tornado/pull/3704", "https://github.com/tornadoweb/tornado/commit/8d6363ed7b69d5f0da806efe34d256627a2191de"], "fixes": [], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2026-49855", "noindex": false, "published": "2026-07-14T20:45:02.982Z", "modified": "2026-07-16T14:56:38.904Z", "cvss": 7.5, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "severity": "high", "epss": 0.00572, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-49855", "title": "tornado AsyncHTTPClient accumulates decompressed chunks without size limit (gzip bomb)", "description": "Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, Tornado gzip decompression routines processed limited-size chunks but did not enforce an overall limit on accumulated decompressed chunks, allowing a malicious server accessed by SimpleAsyncHTTPClient or an HTTPServer configured with decompress_request=True to consume effectively unlimited memory. This issue is fixed in version 6.5.6.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-mgf9-4vpg-hj56", "https://github.com/tornadoweb/tornado/pull/3626", "https://github.com/tornadoweb/tornado/commit/ff808b33adc52d89a549376a5e3628e92abbc8ff"], "fixes": [], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2026-49854", "noindex": false, "published": "2026-07-14T20:43:03.977Z", "modified": "2026-07-15T13:26:39.749Z", "cvss": 5.3, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "severity": "medium", "epss": 0.00419, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-49854", "title": "Tornado: Out-of-bounds memory access in C extension", "description": "Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, the optional native extension tornado.speedups implemented websocket_mask without validating that the mask argument is exactly four bytes, allowing the C function to read up to three bytes beyond the provided buffer when reached through Tornado XSRF token decoding with the native extension active. This issue is fixed in version 6.5.6.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-cx3h-4qpv-8hc9", "https://github.com/tornadoweb/tornado/pull/3626", "https://github.com/tornadoweb/tornado/commit/96dc88c2a05705287856b2cd6b4b4034f9a6aaac"], "fixes": [], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2026-49853", "noindex": false, "published": "2026-07-14T20:41:32.075Z", "modified": "2026-07-21T14:47:51.048Z", "cvss": 7.7, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "severity": "high", "epss": 0.00445, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-49853", "title": "Tornado: Authorization header forwarded across cross-origin redirects in SimpleAsyncHTTPClient", "description": "Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, SimpleAsyncHTTPClient shallow-copied redirected requests and removed only the Host header, leaving Authorization, auth_username, auth_password, and auth_mode in place when a redirect changed scheme, host, or port. This issue is fixed in version 6.5.6.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-3x9g-8vmp-wqvf", "https://github.com/tornadoweb/tornado/pull/3626", "https://github.com/tornadoweb/tornado/commit/aba2569f7ed7a6bdbef816658fb6b7182531b751"], "fixes": [], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2026-35536", "noindex": false, "published": "2026-04-03T02:25:57.427Z", "modified": "2026-04-03T13:12:16.105Z", "cvss": 7.2, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N", "severity": "high", "epss": 0.00242, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-35536", "title": "CVE-2026-35536", "description": "In Tornado before 6.5.5, cookie attribute injection could occur because the domain, path, and samesite arguments to .RequestHandler.set_cookie were not checked for crafted characters.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-78cv-mqj4-43f7", "https://github.com/tornadoweb/tornado/releases/tag/v6.5.5", "https://nvd.nist.gov/vuln/detail/CVE-2026-35536"], "fixes": [], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2026-31958", "noindex": false, "published": "2026-03-11T19:27:23.380Z", "modified": "2026-04-01T14:32:33.146Z", "cvss": 8.7, "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "severity": "high", "epss": 0.00381, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-31958", "title": "Tornado has a DoS due to too many multipart parts", "description": "Tornado is a Python web framework and asynchronous networking library. In versions of Tornado prior to 6.5.5, the only limit on the number of parts in multipart/form-data is the max_body_size setting (default 100MB). Since parsing occurs synchronously on the main thread, this creates the possibility of denial-of-service due to the cost of parsing very large multipart bodies with many parts. This vulnerability is fixed in 6.5.5.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-qjxf-f2mg-c6mc", "https://lists.debian.org/debian-lts-announce/2026/04/msg00000.html", "https://nvd.nist.gov/vuln/detail/CVE-2026-31958"], "fixes": [], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2025-67726", "noindex": false, "published": "2025-12-12T06:13:51.336Z", "modified": "2025-12-18T18:48:49.007Z", "cvss": 7.5, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "severity": "high", "epss": 0.00535, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2025-67726", "title": "Tornado is Vulnerable to Quadratic DoS via Crafted Multipart Parameters", "description": "Tornado is a Python web framework and asynchronous networking library. Versions 6.5.2 and below use an inefficient algorithm when parsing parameters for HTTP header values, potentially causing a DoS. The _parseparam function in httputil.py is used to parse specific HTTP header values, such as those in multipart/form-data and repeatedly calls string.count() within a nested loop while processing quoted semicolons. If an attacker sends a request with a large number of maliciously crafted parameters in a Content-Disposition header, the server's CPU usage increases quadratically (O(n²)) during parsing. Due to Tornado's single event loop architectu", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-jhmp-mqwm-3gq8", "https://github.com/tornadoweb/tornado/commit/771472cfdaeebc0d89a9cc46e249f8891a6b29cd", "https://github.com/tornadoweb/tornado/releases/tag/v6.5.3"], "fixes": ["6.2.0-3+deb12u4"], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2025-67725", "noindex": false, "published": "2025-12-12T05:49:41.523Z", "modified": "2025-12-18T18:51:00.369Z", "cvss": 7.5, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "severity": "high", "epss": 0.00559, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2025-67725", "title": "Tornado is Vulnerable to Quadratic DoS via Repeated Header Coalescing", "description": "Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, a single maliciously crafted HTTP request can block the server's event loop for an extended period, caused by the HTTPHeaders.add method. The function accumulates values using string concatenation when the same header name is repeated, causing a Denial of Service (DoS).  Due to Python string immutability, each concatenation copies the entire string, resulting in O(n²) time complexity. The severity can vary from high if max_header_size has been increased from its default, to low if it has its default value of 64KB. This issue is fixed in version", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-c98p-7wgm-6p64", "https://github.com/tornadoweb/tornado/commit/771472cfdaeebc0d89a9cc46e249f8891a6b29cd", "https://github.com/tornadoweb/tornado/releases/tag/v6.5.3"], "fixes": ["6.2.0-3+deb12u4"], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2025-67724", "noindex": false, "published": "2025-12-12T05:36:59.992Z", "modified": "2025-12-18T18:53:38.061Z", "cvss": 5.4, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N", "severity": "medium", "epss": 0.0024, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2025-67724", "title": "Tornado vulnerable to Header Injection and XSS via reason argument", "description": "Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, the supplied reason phrase is used unescaped in HTTP headers (where it could be used for header injection) or in HTML in the default error page (where it could be used for XSS) and can be exploited by passing untrusted or malicious data into the reason argument. Used by both RequestHandler.set_status and tornado.web.HTTPError, the argument is designed to allow applications to pass custom \"reason\" phrases (the \"Not Found\" in HTTP/1.1 404 Not Found) to the HTTP status line (mainly for non-standard status codes). This issue is fixed in version 6.5", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-pr2v-jx2c-wg9f", "https://github.com/tornadoweb/tornado/commit/9c163aebeaad9e6e7d28bac1f33580eb00b0e421", "https://github.com/tornadoweb/tornado/releases/tag/v6.5.3"], "fixes": ["6.2.0-3+deb12u4"], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "DSA-5938-1", "noindex": false, "published": "2025-06-06T00:00:00Z", "modified": "2026-03-09T01:21:40.089803Z", "cvss": null, "cvss_vector": "", "severity": "unknown", "epss": null, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/dsa-5938-1", "title": "python-tornado - security update", "description": "python-tornado - security update", "references": ["https://osv.dev/vulnerability/DSA-5938-1"], "fixes": ["6.2.0-3+deb12u2"], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}, {"id": "CVE-2025-47287", "noindex": false, "published": "2025-05-15T21:17:55.188Z", "modified": "2025-05-29T06:04:05.899Z", "cvss": 7.5, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "severity": "high", "epss": 0.00745, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2025-47287", "title": "Tornado vulnerable to excessive logging caused by malformed multipart form data", "description": "Tornado is a Python web framework and asynchronous networking library. When Tornado's ``multipart/form-data`` parser encounters certain errors, it logs a warning but continues trying to parse the remainder of the data. This allows remote attackers to generate an extremely high volume of logs, constituting a DoS attack. This DoS is compounded by the fact that the logging subsystem is synchronous. All versions of Tornado prior to 6.5.0 are affected. The vulnerable parser is enabled by default. Upgrade to Tornado version 6.50 to receive a patch. As a workaround, risk can be mitigated by blocking `Content-Type: multipart/form-data` in a proxy.", "references": ["https://github.com/tornadoweb/tornado/security/advisories/GHSA-7cx3-6m66-7c5m", "https://github.com/tornadoweb/tornado/commit/b39b892bf78fe8fea01dd45199aa88307e7162f3", "https://lists.debian.org/debian-lts-announce/2025/05/msg00038.html"], "fixes": ["6.2.0-3+deb12u2"], "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}]}], "total": 25, "unknown_count": 0, "release_unconfirmed": false, "page": 1, "pages": 2, "filtered": false, "noindex": false, "filters": {}, "page_size": 20, "products": [{"name": "python-tornado", "path": "vulns/debian-12/python-tornado", "ecosystem": "Debian:12"}], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}, {"name": "web", "path": "vulns/stack/web", "slug": "web"}, {"name": "php", "path": "vulns/stack/php", "slug": "php"}, {"name": "python", "path": "vulns/stack/python", "slug": "python"}, {"name": "node", "path": "vulns/stack/node", "slug": "node"}, {"name": "database", "path": "vulns/stack/database", "slug": "database"}, {"name": "containers", "path": "vulns/stack/containers", "slug": "containers"}, {"name": "network", "path": "vulns/stack/network", "slug": "network"}, {"name": "applications", "path": "vulns/stack/applications", "slug": "applications"}], "versions": [], "stats": {"recent": 3, "kev": 0}, "lastmod": "2026-10-08T15:26:01.123Z", "early_advisories": [], "license": "Puedes utilizar libremente la selección de PatchFirst y nuestras aportaciones (prioridades, alertas tempranas, textos, resúmenes y agregados) para tus propios fines, incluido el uso interno de tu empresa. La reventa, la distribución comercial y la creación masiva de réplicas de esta selección o de estas aportaciones requieren un acuerdo escrito con el operador. Siempre que uses o publiques la selección o nuestras aportaciones, cita a PatchFirst (https://patchfirst.dev/vulns/) con este enlace a la página del flujo de tu región. Los registros originales de fuentes abiertas siguen sujetos a sus respectivas licencias y condiciones. Estas condiciones no limitan tus derechos sobre los datos originales, que puedes obtener directamente de esas fuentes.", "terms_url": "https://patchfirst.dev/es/vulns/#feed-terms", "attribution": {"name": "PatchFirst", "url": "https://patchfirst.dev/vulns/"}, "source_changes": "PatchFirst selecciona, normaliza y combina los registros; se pueden añadir resúmenes y traducciones. Las noticias incluyen un enlace a la fuente original en cada entrada.", "sources": [{"id": "cve", "name": "CVE List / CVE.org", "url": "https://www.cve.org/", "license": "CVE Terms of Use", "terms_url": "https://www.cve.org/Legal/TermsOfUse", "notice": "Copyright © 1999–2021, The MITRE Corporation. LICENSE Submissions : For all materials you submit to the Common Vulnerabilities and Exposures (CVE™), you hereby grant to The MITRE Corporation (MITRE) and all CVE Numbering Authorities (CNAs) a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute such materials and derivative works. Unless required by applicable law or agreed to in writing, you provide such materials on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. CVE Usage : MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy. DISCLAIMERS ALL DOCUMENTS AND THE INFORMATION CONTAINED THEREIN PROVIDED BY MITRE ARE PROVIDED ON AN \"AS IS\" BASIS AND THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE MITRE CORPORATION, ITS BOARD OF TRUSTEES, OFFICERS, AGENTS, AND EMPLOYEES, DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION THEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE."}, {"id": "osv", "name": "OSV", "url": "https://osv.dev/", "terms_url": "https://google.github.io/osv.dev/data/", "terms": "Las licencias de las bases originales varían; consulta el catálogo de fuentes."}, {"id": "kev", "name": "CISA KEV", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "license": "CC0-1.0", "terms_url": "https://github.com/cisagov/kev-data/blob/develop/LICENSE"}, {"id": "epss", "name": "FIRST EPSS", "url": "https://www.first.org/epss/", "terms_url": "https://www.first.org/epss/faq", "terms": "Puntuaciones públicas gratuitas; se solicita atribución (FIRST EPSS, puntuaciones generadas por Empirical Security)."}, {"id": "github-advisory", "name": "GitHub Advisory Database", "url": "https://github.com/advisories", "license": "CC-BY-4.0", "terms_url": "https://github.com/github/advisory-database/blob/main/LICENSE.md"}, {"id": "exploitdb", "name": "Exploit-DB", "url": "https://www.exploit-db.com/", "license": "GPL-2.0", "terms_url": "https://gitlab.com/exploit-database/exploitdb/-/blob/main/LICENSE.md"}, {"id": "metasploit", "name": "Metasploit", "url": "https://github.com/rapid7/metasploit-framework", "license": "BSD-3-Clause", "terms_url": "https://github.com/rapid7/metasploit-framework/blob/master/LICENSE", "notice": "Copyright (c) 2006-2026, Rapid7, Inc.\nLicense: BSD-3-clause\n Redistribution and use in source and binary forms, with or without modification,\n are permitted provided that the following conditions are met:\n .\n * Redistributions of source code must retain the above copyright notice,\n this list of conditions and the following disclaimer.\n .\n * Redistributions in binary form must reproduce the above copyright notice,\n this list of conditions and the following disclaimer in the documentation\n and/or other materials provided with the distribution.\n .\n * Neither the name of Rapid7, Inc. nor the names of its contributors\n may be used to endorse or promote products derived from this software\n without specific prior written permission.\n .\n THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\" AND\n ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n DISCLAIMED. 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IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\nSOFTWARE."}, {"id": "linux-kernel", "name": "Linux kernel releases", "url": "https://www.kernel.org/", "license": "CC-BY-SA-4.0", "terms_url": "https://www.kernel.org/legal.html", "notice": "Copyright (C) 1997-2014 by The Linux Kernel Organization, Inc."}]}