CVE-2026-58154

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

State: Published
Severity: 9.2 Critical
Published: Jul 29, 2026
Updated: Oct 1, 2026
Reserved: Jun 29, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	9.2 Critical	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	apache
3.1	8.9 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:H	apache

Weaknesses

CWE-787 Out-of-bounds Write

Affected Products

Product	Versions
Apache Traffic ServerApache Software Foundation	8.0.0 through 8.1.11Affected 9.0.0 through 9.2.14Affected 10.0.0 through 10.1.3Affected

References

https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6dvendor-advisory

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