HTTP/2 Multiplexing Vulnerability in Apache Traffic Server
CVE-2026-65325

6.3MEDIUM

Key Information:

Vendor

Apache
Status
Apache Traffic Server
Vendor
CVE Published:
29 July 2026

What is CVE-2026-65325?

A vulnerability in Apache Traffic Server permits the reuse of multiplexed HTTP/2 origin connections without verifying that the server certificate matches the new request hostname. This flaw could allow an attacker to intercept or manipulate HTTP requests made to the server. It is crucial for users of affected versions of Apache Traffic Server to upgrade to versions 9.2.15 or 10.1.4, which resolve this issue. The flaw underscores the importance of proper server certificate validation to maintain secure and reliable connections.

Affected Version(s)

Apache Traffic Server 9.0.0 <= 9.2.14

Apache Traffic Server 10.0.0 <= 10.1.3

References

https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnoky...
vendor-advisory

CVSS V4

Score:
6.3
Severity:
MEDIUM
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
Omkhar Arasaratnam
.