PT-2026-65732 · Apache · Apache Traffic Server

Omkhar Arasaratnam

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CVE-2026-58155

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Published

2026-07-29

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Updated

2026-08-07

CVSS v3.1

9.3

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
Name of the Vulnerable Software and Affected Versions Apache Traffic Server versions 8.0.0 through 8.1.9 Apache Traffic Server versions 9.0.0 through 9.2.14 Apache Traffic Server versions 10.0.0 through 10.1.3
Description Apache Traffic Server truncates header names that exceed a certain length. This behavior enables header aliasing, request smuggling, and policy bypass.
Recommendations Upgrade versions 8.0.0 through 9.2.14 to version 9.2.15. Upgrade versions 10.0.0 through 10.1.3 to version 10.1.4.

Exploit

Fix

DoS

HTTP Request/Response Smuggling

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Weakness Enumeration

CWE-444

Related Identifiers

CVE-2026-58155
OESA-2026-3309
OESA-2026-3310
OESA-2026-3311

Affected Products

Apache Traffic Server