CVE-2026-58154 Apache Traffic Server: Memory-safety errors in MIME and header parsing
Attackers can trigger memory corruption in Apache Traffic Server via crafted MIME or HTTP headers, potentially leading to code execution or service crashes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-58154?
CVE-2026-58154 is a critical memory corruption 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 write out of bounds or overflow integers while parsing MIME and HTTP headers.
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-787
Which versions are affected by CVE-2026-58154?
It affects 1 product.
Products include Apache Traffic Server.
How do I fix CVE-2026-58154?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-58154 being exploited?
There is no known exploitation of CVE-2026-58154 in the wild and no public exploit code.
Other vulnerabilities in Apache Traffic Server
Sources
Also known as DEBIAN-CVE-2026-58154, GHSA-pfrm-2m3q-3pcv, UBUNTU-CVE-2026-58154.