CVE-2026-111812 — CRITICAL (10.0)

Vulnerability Description

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.

CVSS Score

10.0

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

NONE

Related Weaknesses (CWE)

CWE-863

References

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

FAQ

What is CVE-2026-111812?

CVE-2026-111812 is a vulnerability with a CVSS score of 10.0 (CRITICAL). 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: fro...

How severe is CVE-2026-111812?

CVE-2026-111812 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-111812?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.