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CVE-2025-55702 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:8.7 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://lists.apache.org/thread/r95dq29ywcd1f4x30snxlqmb12z4s4kc	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-444	Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

4 change records found show changes

Date	Action	Recorded By
Oct 28, 2026	CVE Translated	[email protected]
Oct 23, 2026	CVE Modified	CISA-ADP
Oct 22, 2026	CVE Modified	CISA-ADP
Oct 21, 2026	New CVE Received	[email protected]