PT-2026-65732 · Apache · Apache Traffic Server

Omkhar Arasaratnam · CVE-2026-58155 · Published 2026-07-29 · Updated 2026-07-29

Mitre

CVSS v3.1

9.3

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N

Apache Traffic Server truncates over-long header names, allowing header aliasing, request smuggling, and policy bypass.

This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, 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.

Fix

HTTP Request/Response Smuggling

Weakness Enumeration

CWE-444

Related Identifiers

CVE-2026-58155

Affected Products

Apache Traffic Server

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-58155 · Security Note
• https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d · Vendor Advisory