Vulnerability · Published Oct 22, 2026 · Assigned by fedora

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

Low 3.7

In plain English

A low-severity out-of-bounds read in mod_qos from pbuchbinder. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)3.7Low

Exploit odds (30 days)0.4%top 69.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:14	mod-qos	no fix listed	DEBIAN-CVE-2026-114459
Ubuntu:26.04:LTS	mod-qos	no fix listed	UBUNTU-CVE-2026-114459
Ubuntu:26.10	mod-qos	no fix listed	UBUNTU-CVE-2026-114459

Affected products (as reported)

Vendor	Product	Versions
pbuchbinder	mod_qos	11.7411.7611.79

Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

References

https://access.redhat.com/security/cve/CVE-2026-114459 vdb-entry, x_refsource_REDHAT
RHBZ#2558397 issue-tracking, x_refsource_REDHAT