Vulnerability in Apache Traffic Server's Origin Server Authentication Plugin
CVE-2026-111812

7HIGH

Key Information:

Vendor

Apache
Status
Apache Traffic Server
Vendor
CVE Published:
21 October 2026

What is CVE-2026-111812?

The origin_server_auth plugin in Apache Traffic Server contains a vulnerability that allows unauthorized clients to manipulate AWS request headers using the proxy's own credentials. This could lead to arbitrary signing of these headers, presenting a significant security risk. Users are encouraged to upgrade to versions 9.2.16, 10.1.5, or 10.2.1 to mitigate this issue.

Affected Version(s)

Apache Traffic Server 8.0.0 <= 8.1.11

Apache Traffic Server 9.0.0 <= 9.2.15

Apache Traffic Server 10.0.0 <= 10.1.4

References

https://lists.apache.org/thread/r95dq29ywcd1f4x30snxlqmb1...
vendor-advisory

CVSS V4

Score:
7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Apache Community
.