CVE-2026-111812

Apache Traffic Server's origin_server_auth plugin lets a client force signing of attacker-chosen AWS request headers under the proxy's own credentials. 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.

Score

CVSS 3.1 10.0 Critical

Status

Awaiting Analysis - security@apache.org

Published

2026-10-21

Last modified

2026-10-23

Weaknesses

CWE-863

Affected products

• Apache Traffic Server (Apache Software Foundation)

References

• https://lists.apache.org/thread/r95dq29ywcd1f4x30snxlqmb12z4s4kc