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trafficserver vulnerabilities · Page 3

Vulnerabilities published for trafficserver in the last 30 days: 16. Listed in the KEV catalogue: 0.

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Vulnerabilities: 134

  1. CVE-2026-58155

    Critical · CVSS 9.2EPSS 0.54%No fix published

    Apache Traffic Server: Header-name length truncation enables header aliasing and request smuggling

    Apache Traffic Server truncates over-long header names, allowing header aliasing, request smuggling, and policy bypass. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

    Published Updated
  2. CVE-2026-58154

    Critical · CVSS 9.2EPSS 0.54%No fix published

    Apache Traffic Server: Memory-safety errors in MIME and header parsing

    Apache Traffic Server can write out of bounds or overflow integers while parsing MIME and HTTP headers. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

    Published Updated
  3. CVE-2026-65325

    Medium · CVSS 6.3EPSS 0.28%No fix published

    Apache Traffic Server: HTTP/2 multiplexed origin sessions are reused without certificate re-verification

    Apache Traffic Server reuses multiplexed HTTP/2 origin connections without verifying the server certificate covers the new request hostname. This issue affects Apache Traffic Server: from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

    Published Updated
  4. CVE-2026-65324

    High · CVSS 8.2EPSS 0.66%No fix published

    Apache Traffic Server: HTTP/2 and HTTP/3 dechunking removes per-stream buffer cap, allowing memory exhaustion

    Apache Traffic Server drops the per-stream buffer cap when dechunking HTTP/2 or HTTP/3 responses, letting a slow client exhaust server memory. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

    Published Updated
  5. CVE-2026-58153

    Medium · CVSS 6.3EPSS 0.64%No fix published

    Apache Traffic Server: HTTP/2 to HTTP/1 conversion forwards origin trailers to clients unsafely

    Apache Traffic Server forwards HTTP/2 origin trailers to HTTP/1 clients without proper chunked framing when converting HTTP/2 to HTTP/1. This issue affects Apache Traffic Server: from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

    Published Updated
  6. CVE-2026-58152

    Medium · CVSS 6.9EPSS 0.58%No fix published

    Apache Traffic Server: Integer-handling errors in HPACK/XPACK decoding corrupt memory

    Apache Traffic Server mishandles integers while decoding HPACK/XPACK headers, corrupting memory. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

    Published Updated
  7. CVE-2026-58151

    High · CVSS 8.7EPSS 0.66%No fix published

    Apache Traffic Server: Abusive HTTP/2 framing can exhaust resources and crash the server

    Apache Traffic Server can be crashed or driven to resource exhaustion by abusive HTTP/2 framing and flow-control. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

    Published Updated
  8. CVE-2026-58150

    High · CVSS 7.8EPSS 0.57%No fix published

    Apache Traffic Server: HTTP/2 requests with Transfer-Encoding are not rejected, allowing request smuggling

    Apache Traffic Server does not reject Transfer-Encoding in HTTP/2 requests, allowing downgrade request smuggling. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

    Published Updated
  9. CVE-2026-57834

    High · CVSS 7EPSS 0.61%No fix published

    Apache Traffic Server: Malformed chunked message body allows request smuggling

    Apache Traffic Server allows request smuggling if chunked messages are malformed. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

    Published Updated
  10. CVE-2026-33930

    High · CVSS 8.2EPSS 0.58%No fix published

    Apache Traffic Server: Buffer overflow via Host field that has a long string value

    Apache Traffic Server copies the client Host header into a fixed-size stack buffer without a bound during redirect handling, so an over-long Host header overflows the stack when redirect following is enabled. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

    Published Updated
  11. CVE-2026-24033

    Medium · CVSS 6.9EPSS 0.57%No fix published

    Apache Traffic Server: Request smuggling via chunked extension quoted-string parsing

    Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 10.0.0 through 10.1.3, from 9.0.0 through 9.2.14. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fixes the issue.

    Published Updated
  12. CVE-2026-33267

    High · CVSS 7.7EPSS 0.6%No fix published

    Apache Traffic Server: Untrusted @ headers can spoof ATS internal metadata

    Improper Input Validation vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 9.2.0 through 9.2.14, from 10.1.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fixes the issue.

    Published Updated
  13. CVE-2026-22068

    Medium · CVSS 6.9EPSS 0.61%No fix published

    Apache Traffic Server: Regex mappings match with malicious domain names

    Regular Expression without Anchors vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 10.0.X through 10.1.3, from 9.0.X through 9.2.14. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fixes the issue.

    Published Updated
  14. CVE-2026-41920

    High · CVSS 7EPSS 0.53%No fix published

    Apache Traffic Server: SNI to Host header matching policy is not properly enforced

    Improper Access Control vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 9.0.0 through 9.1.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.1.15 or 10.1.4, which fixes the issue.

    Published Updated
  15. CVE-2026-59173

    High · CVSS 7.5EPSS 0.74%No fix published

    Apache Traffic Server: DoS vulnerability in HTTP/2 via stalled flow-control conditions

    Uncontrolled Resource Consumption vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 9.0.0 through 9.1.13, from 10.0.0 through 10.1.2. Users are recommended to upgrade to version 9.1.14 or 10.1.3, which fixes the issue.

    Published Updated
  16. CVE-2025-65114

    High · CVSS 7.5EPSS 0.43%Fix available

    Apache Traffic Server: Malformed chunked message body allows request smuggling

    Apache Traffic Server allows request smuggling if chunked messages are malformed.  This issue affects Apache Traffic Server: from 9.0.0 through 9.2.12, from 10.0.0 through 10.1.1. Users are recommended to upgrade to version 9.2.13 or 10.1.2, which fix the issue.

    • Update to 9.2.5+ds-0+deb12u4
    Published Updated
  17. CVE-2025-58136

    High · CVSS 7.5EPSS 0.67%Fix available

    Apache Traffic Server: A simple legitimate POST request causes a crash

    A bug in POST request handling causes a crash under a certain condition. This issue affects Apache Traffic Server: from 10.0.0 through 10.1.1, from 9.0.0 through 9.2.12. Users are recommended to upgrade to version 10.1.2 or 9.2.13, which fix the issue. A workaround for older versions is to set proxy.config.http.request_buffer_enabled to 0 (the default value is 0).

    • Update to 9.2.5+ds-0+deb12u4
    Published Updated
  18. CVE-2025-31698

    High · CVSS 7.5EPSS 0.55%Fix available

    Apache Traffic Server: Client IP address from PROXY protocol is not used for ACL

    ACL configured in ip_allow.config or remap.config does not use IP addresses that are provided by PROXY protocol. Users can use a new setting (proxy.config.acl.subjects) to choose which IP addresses to use for the ACL if Apache Traffic Server is configured to accept PROXY protocol.  This issue affects undefined: from 10.0.0 through 10.0.6, from 9.0.0 through 9.2.10. Users are recommended to upgrade to version 9.2.11 or 10.0.6, which fixes the issue.

    • Update to 9.2.5+ds-0+deb12u3
    Published Updated
  19. CVE-2025-49763

    High · CVSS 7.5EPSS 0.74%Fix available

    Apache Traffic Server: Remote DoS via memory exhaustion in ESI Plugin

    ESI plugin does not have the limit for maximum inclusion depth, and that allows excessive memory consumption if malicious instructions are inserted. Users can use a new setting for the plugin (--max-inclusion-depth) to limit it. This issue affects Apache Traffic Server: from 10.0.0 through 10.0.5, from 9.0.0 through 9.2.10. Users are recommended to upgrade to version 9.2.11 or 10.0.6, which fixes the issue.

    • Update to 9.2.5+ds-0+deb12u3
    Published Updated

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