CVE-2026-111812 Apache Traffic Server: origin_server_auth signs client-controlled AWS headers under the proxy's IAM credentials
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-111812?
CVE-2026-111812 is a high-severity vulnerability in Apache Traffic Server, published on 21 Oct 2026.
Official 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.
Weakness: CWE-863
Which versions are affected by CVE-2026-111812?
How do I fix CVE-2026-111812?
No fix has been published for CVE-2026-111812 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-111812 being exploited?
There is no known exploitation of CVE-2026-111812 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-111812, GHSA-hq3r-f7fj-4pwj, UBUNTU-CVE-2026-111812.