CVE-2026-58179 Apache Traffic Server: regex_remap plugin overflows the stack from attacker input
Attacker can trigger stack overflow in Apache Traffic Server regex_remap plugin via substitution input, leading to code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-58179?
CVE-2026-58179 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
The Apache Traffic Server regex_remap plugin overflows the stack and integers from substitution input.
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-121
Which versions are affected by CVE-2026-58179?
It affects 1 product.
Products include Apache Traffic Server.
How do I fix CVE-2026-58179?
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-2026-58179 being exploited?
There is no known exploitation of CVE-2026-58179 in the wild and no public exploit code.
Other vulnerabilities in Apache Traffic Server
Sources
Also known as DEBIAN-CVE-2026-58179, GHSA-xwr4-7vg8-hx5g, UBUNTU-CVE-2026-58179.