{"kind": "product", "path": "vulns/debian-14/ujson", "name": "ujson", "product": "ujson", "ecosystem": "Debian:14", "items": [{"id": "CVE-2026-54911", "noindex": false, "published": "2026-06-22T20:53:07.019Z", "modified": "2026-06-23T14:20:13.488Z", "cvss": 6.5, "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "severity": "medium", "epss": 0.00371, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-54911", "title": "UltraJSON: Malformed/Truncated UTF-8 Accepted and Silently Rewritten in ujson.dumps()", "description": "UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.13.0, ujson.dumps() (or ujson.dump() or ujson.encode()) have a reject_bytes=False option. When set, they may accept malformed or truncated UTF-8 byte sequences, silently rewriting them into different Unicode characters instead of rejecting them. This leads to input validation bypass and data integrity issues. This vulnerability is fixed in 5.13.0.", "references": ["https://github.com/ultrajson/ultrajson/security/advisories/GHSA-3j69-69wj-xqx2", "https://github.com/ultrajson/ultrajson/commit/169eaf36b1116fece5034ee79a7a0ef3f6deedcf", "https://github.com/ultrajson/ultrajson/releases/tag/5.13.0"], "fixes": ["5.13.0-1"], "products": [{"name": "ujson", "path": "vulns/debian-14/ujson", "ecosystem": "Debian:14"}]}, {"id": "CVE-2026-44660", "noindex": false, "published": "2026-05-27T20:42:59.830Z", "modified": "2026-05-30T01:49:35.278Z", "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": 0.00421, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-44660", "title": "UltraJSON: Memory Leak in ujson.dump() on Write Failure", "description": "UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.12.1, when ujson.dump() writes to a file-like object and the write operation raises an exception, the serialized JSON string object is not decremented, leaking memory. Each failed write operation leaks the full size of the serialized payload. This vulnerability is fixed in 5.12.1.", "references": ["https://github.com/ultrajson/ultrajson/security/advisories/GHSA-c38f-wx89-p2xg", "https://github.com/ultrajson/ultrajson/commit/82af1d0ac01d09aa40c887b460d44b9d9f4bccd9", "https://github.com/ultrajson/ultrajson/releases/tag/5.12.1"], "fixes": ["5.13.0-1"], "products": [{"name": "ujson", "path": "vulns/debian-14/ujson", "ecosystem": "Debian:14"}]}, {"id": "CVE-2026-32875", "noindex": false, "published": "2026-03-20T01:35:23.362Z", "modified": "2026-07-15T01:07:31.359Z", "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": 0.00477, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-32875", "title": "UltraJSON has an integer overflow handling large indent leads to buffer overflow or infinite loop", "description": "UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Versions 5.10 through 5.11.0 are vulnerable to buffer overflow or infinite loop through large indent handling. ujson.dumps() crashes the Python interpreter (segmentation fault) when the product of the indent parameter and the nested depth of the input exceeds INT32_MAX. It can also get stuck in an infinite loop if the indent is a large negative number. Both are caused by an integer overflow/underflow whilst calculating how much memory to reserve for indentation. And both can be used to achieve denial of service. To be vulnerable, a service must call ", "references": ["https://github.com/ultrajson/ultrajson/security/advisories/GHSA-c8rr-9gxc-jprv", "https://github.com/ultrajson/ultrajson/issues/700", "https://github.com/ultrajson/ultrajson/commit/486bd4553dc471a1de11613bc7347a6b318e37ea"], "fixes": ["5.13.0-1"], "products": [{"name": "ujson", "path": "vulns/debian-14/ujson", "ecosystem": "Debian:14"}]}, {"id": "CVE-2026-32874", "noindex": false, "published": "2026-03-20T01:31:30.207Z", "modified": "2026-07-15T01:07:33.770Z", "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": 0.00497, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2026-32874", "title": "UltraJSON has a Memory Leak parsing large integers allows DoS", "description": "UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Versions 5.4.0 through 5.11.0 contain an accumulating memory leak in JSON parsing large (outside of the range [-2^63, 2^64 - 1]) integers. The leaked memory is a copy of the string form of the integer plus an additional NULL byte. The leak occurs irrespective of whether the integer parses successfully or is rejected due to having more than sys.get_int_max_str_digits() digits, meaning that any sized leak per malicious JSON can be achieved provided that there is no limit on the overall size of the payload. Any service that calls ujson.load()/ujson.load", "references": ["https://github.com/ultrajson/ultrajson/security/advisories/GHSA-wgvc-ghv9-3pmm", "https://github.com/ultrajson/ultrajson/commit/4baeb950df780092bd3c89fc702a868e99a3a1d2", "https://github.com/ultrajson/ultrajson/releases/tag/5.12.0"], "fixes": ["5.13.0-1"], "products": [{"name": "ujson", "path": "vulns/debian-14/ujson", "ecosystem": "Debian:14"}]}, {"id": "CVE-2022-31116", "noindex": false, "published": "2022-07-05T17:35:11.000Z", "modified": "2025-04-22T17:52:13.305Z", "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": 0.02545, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2022-31116", "title": "Incorrect handling of invalid surrogate pair characters in ujson", "description": "UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Affected versions were found to improperly decode certain characters. JSON strings that contain escaped surrogate characters not part of a proper surrogate pair were decoded incorrectly. Besides corrupting strings, this allowed for potential key confusion and value overwriting in dictionaries. All users parsing JSON from untrusted sources are vulnerable. From version 5.4.0, UltraJSON decodes lone surrogates in the same way as the standard library's `json` module does, preserving them in the parsed output. Users are advised to upgrade. There are no kn", "references": ["https://github.com/ultrajson/ultrajson/security/advisories/GHSA-wpqr-jcpx-745r", "https://github.com/ultrajson/ultrajson/commit/67ec07183342589d602e0fcf7bb1ff3e19272687", "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPPU5FZP3LCTXYORFH7NHUMYA5X66IA7/"], "fixes": ["5.4.0-1"], "products": [{"name": "ujson", "path": "vulns/debian-14/ujson", "ecosystem": "Debian:14"}]}, {"id": "CVE-2022-31117", "noindex": false, "published": "2022-07-05T17:30:13.000Z", "modified": "2025-04-23T18:05:03.670Z", "cvss": 5.9, "cvss_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "severity": "medium", "epss": 0.01876, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2022-31117", "title": "Double free of buffer during string decoding in ujson", "description": "UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. In versions prior to 5.4.0 an error occurring while reallocating a buffer for string decoding can cause the buffer to get freed twice. Due to how UltraJSON uses the internal decoder, this double free is impossible to trigger from Python. This issue has been resolved in version 5.4.0 and all users should upgrade to UltraJSON 5.4.0. There are no known workarounds for this issue.", "references": ["https://github.com/ultrajson/ultrajson/security/advisories/GHSA-fm67-cv37-96ff", "https://github.com/ultrajson/ultrajson/commit/9c20de0f77b391093967e25d01fb48671104b15b", "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPPU5FZP3LCTXYORFH7NHUMYA5X66IA7/"], "fixes": ["5.4.0-1"], "products": [{"name": "ujson", "path": "vulns/debian-14/ujson", "ecosystem": "Debian:14"}]}, {"id": "CVE-2021-45958", "noindex": false, "published": "2021-12-31T23:52:45.000Z", "modified": "2024-08-04T04:54:31.071Z", "cvss": 6.8, "cvss_vector": "", "severity": "medium", "epss": 0.01667, "kev": false, "exploits": [], "stacks": [{"name": "system", "path": "vulns/stack/system", "slug": "system"}], "path": "vulns/cve-2021-45958", "title": "CVE-2021-45958", "description": "UltraJSON (aka ujson) through 5.1.0 has a stack-based buffer overflow in Buffer_AppendIndentUnchecked (called from encode). Exploitation can, for example, use a large amount of indentation.", "references": ["https://github.com/google/oss-fuzz-vulns/blob/main/vulns/ujson/OSV-2021-955.yaml", "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36009", "https://github.com/ultrajson/ultrajson/issues/502#issuecomment-1031747284"], "fixes": ["5.2.0-1"], "products": [{"name": "ujson", "path": "vulns/debian-14/ujson", "ecosystem": "Debian:14"}]}], "total": 7, "unknown_count": 0, "release_unconfirmed": false, "page": 1, "pages": 1, "filtered": false, "noindex": false, "filters": {}, "page_size": 20, "products": [{"name": "ujson", "path": "vulns/debian-14/ujson", "ecosystem": "Debian:14"}], "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": 0, "kev": 0}, "lastmod": "2026-07-15T01:07:33.770Z", "early_advisories": [], "license": "Vous pouvez librement utiliser la sélection de PatchFirst et nos ajouts (priorités, alertes précoces, textes, synthèses et agrégats) pour vos propres besoins, y compris les activités internes de votre entreprise. La revente, la distribution commerciale et la mise en miroir massive de cette sélection ou de ces ajouts nécessitent un accord écrit avec l’opérateur. Lors de toute utilisation ou publication de la sélection ou de nos ajouts, citez PatchFirst (https://patchfirst.dev/vulns/) avec ce lien vers la page du flux de votre région. Les enregistrements originaux des sources ouvertes restent soumis à leurs licences et conditions respectives. Ces conditions ne limitent pas vos droits sur les données originales, que vous pouvez obtenir directement auprès de ces sources.", "terms_url": "https://patchfirst.dev/fr/vulns/#feed-terms", "attribution": {"name": "PatchFirst", "url": "https://patchfirst.dev/vulns/"}, "source_changes": "PatchFirst sélectionne, normalise et combine les enregistrements ; des synthèses et des traductions peuvent être ajoutées. Les actualités sont accompagnées d’un lien vers la source originale dans chaque entrée.", "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": "Les licences des bases d’origine varient ; voir le catalogue des sources."}, {"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": "Évaluations publiques gratuites ; mention de la source demandée (FIRST EPSS, évaluations produites par 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."}]}