HIGH 7.0 NVD

CVE-2025-55702

When a client sends a POST with Expect: 100-continue and the origin answers before reading the body, Apache Traffic Server parses the unread body left on the cl

When a client sends a POST with Expect: 100-continue and the origin answers before reading the body, Apache Traffic Server parses the unread body left on the client connection as the next request. An attacker behind a front-end proxy that shares connections to Traffic Server can use this to smuggle requests past the front end and desynchronize responses for other users. 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

https://lists.apache.org/thread/r95dq29ywcd1f4x30snxlqmb12z4s4kc

Published: 2026-10-21 · Source: NVD · Feed updated: 2026-10-21

This high severity vulnerability with a CVSS score of 7.0 was published on 2026-10-21 via NVD.

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