CVE-2026-65325 Apache Traffic Server: HTTP/2 multiplexed origin sessions are reused without certificate re-verification
Attackers can bypass TLS certificate verification in Apache Traffic Server by reusing HTTP/2 connections for different hostnames, potentially enabling man-in-the-middle attacks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-65325?
CVE-2026-65325 is a medium-severity vulnerability in Apache Traffic Server, published on 29 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Apache Traffic Server reuses multiplexed HTTP/2 origin connections without verifying the server certificate covers the new request hostname.
This issue affects Apache Traffic Server: from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.
Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.
Weakness: CWE-295
Which versions are affected by CVE-2026-65325?
It affects 1 product.
Products include Apache Traffic Server.
How do I fix CVE-2026-65325?
Upgrade to a fixed version.
Is CVE-2026-65325 being exploited?
There is no known exploitation of CVE-2026-65325 in the wild and no public exploit code.
Other vulnerabilities in Apache Traffic Server
Sources
Also known as DEBIAN-CVE-2026-65325, GHSA-4c56-c2ph-pp8x, UBUNTU-CVE-2026-65325.