CVE-2026-58184 Apache Traffic Server: header_rewrite plugin cookie handling can corrupt memory
An attacker can cause memory corruption or crashes in Apache Traffic Server via the header_rewrite plugin, potentially leading to denial of service or code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-58184?
CVE-2026-58184 is a high-severity 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
The Apache Traffic Server header_rewrite plugin can crash or corrupt memory during cookie operations and CIDR condition matching.
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-2026-58184?
It affects 1 product.
Products include Apache Traffic Server.
How do I fix CVE-2026-58184?
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-2026-58184 being exploited?
There is no known exploitation of CVE-2026-58184 in the wild and no public exploit code.
Other vulnerabilities in Apache Traffic Server
Sources
Also known as DEBIAN-CVE-2026-58184, GHSA-m68v-95hx-r5c3, UBUNTU-CVE-2026-58184.