CVE-2025-31699 (GCVE-0-2025-31699)
Vulnerability from cvelistv5
Published
2026-10-21 18:22
Modified
2026-10-23 11:06
Severity ?
8.9 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
9.1 (Critical) - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:L/SC:H/SI:H/SA:L
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests
Summary
Apache Traffic Server can return an origin connection to the shared pool while the origin is still waiting on a request body the client declared but never fully sent, including when the client used Expect: 100-continue. The origin then reads a later request on that connection as leftover body data, which lets an attacker smuggle requests past ATS access controls, disrupt other users' requests, or poison the cache. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache Traffic Server Version: 8.0.0   ≤ 8.1.11
Version: 9.0.0   ≤ 9.2.15
Version: 10.0.0   ≤ 10.1.4
Version: 10.2.0   ≤
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