CVE-2026-58181 Apache Traffic Server: uri_signing and url_sig plugins can exhaust the stack or crash
Attacker input can exhaust the stack or crash Apache Traffic Server via uri_signing and url_sig plugins, causing 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-2026-58181?
CVE-2026-58181 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
The Apache Traffic Server uri_signing and url_sig plugins can exhaust the stack or crash on attacker 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-2026-58181?
It affects 1 product.
Products include Apache Traffic Server.
How do I fix CVE-2026-58181?
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-2026-58181 being exploited?
There is no known exploitation of CVE-2026-58181 in the wild and no public exploit code.
Other vulnerabilities in Apache Traffic Server
Sources
Also known as DEBIAN-CVE-2026-58181, GHSA-2vfg-xrq7-ffvf, UBUNTU-CVE-2026-58181.