CVE-2026-114458 Mod_qos: undersized connection-monitor scratch array permits heap buffer overflow
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-114458?
CVE-2026-114458 is a medium-severity vulnerability in pbuchbinder mod_qos, published on 22 Oct 2026.
Official description
A flaw was found in mod_qos. An unauthenticated remote attacker can cause a Denial of Service (DoS) by maintaining numerous concurrent low-rate connections to a target server. When connection rate monitoring is active, the module fails to verify array boundaries when recording client IP addresses, allowing more connection records to be added than the allocated buffer can hold. This issue leads to heap memory corruption, which can crash the web server process.
Weakness: CWE-787
Which versions are affected by CVE-2026-114458?
How do I fix CVE-2026-114458?
No fix has been published for CVE-2026-114458 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-114458 being exploited?
There is no known exploitation of CVE-2026-114458 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-114458, GHSA-vh3m-p78w-c5fp, UBUNTU-CVE-2026-114458.