CVE-2026-114459: Mod_qos: out-of-bounds reads in response-body substring matching

Severity: low (CVSS 3.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-22 · updated 2026-10-26
Weakness: CWE-125

Description

A flaw was found in mod_qos. When inspecting HTTP response bodies, improper boundary checking can cause the module to read memory outside allocated buffer boundaries. An unauthenticated remote attacker can exploit this vulnerability by triggering specifically crafted server responses, causing an Apache worker process to crash and resulting in a Denial of Service (DoS).

Affected products

pbuchbinder mod_qos: 11.74, 11.76, 11.79

References

https://access.redhat.com/security/cve/CVE-2026-114459
https://bugzilla.redhat.com/show_bug.cgi?id=2558397

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