CVE-2026-58155

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 8.1.11, 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.

Score

CVSS 3.1 9.3 Critical

Status

Modified - security@apache.org

Published

2026-07-29

Last modified

2026-10-01

Weaknesses

CWE-444

Affected products

• Traffic Server (Apache)
• Apache Traffic Server (Apache Software Foundation)

References

• https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d