CVE-2026-58151 Apache Traffic Server: Abusive HTTP/2 framing can exhaust resources and crash the server
Attackers can crash Apache Traffic Server or exhaust resources via abusive HTTP/2 framing, requiring an upgrade to patched versions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-58151?
CVE-2026-58151 is a high-severity denial of service 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 can be crashed or driven to resource exhaustion by abusive HTTP/2 framing and flow-control.
This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, 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-400
Which versions are affected by CVE-2026-58151?
It affects 1 product.
Products include Apache Traffic Server.
How do I fix CVE-2026-58151?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-58151 being exploited?
There is no known exploitation of CVE-2026-58151 in the wild and no public exploit code.
Other vulnerabilities in Apache Traffic Server
Sources
Also known as DEBIAN-CVE-2026-58151, GHSA-fvmr-rjj2-5pq8, UBUNTU-CVE-2026-58151.