CVE-2026-114457: Mod_qos: missing nul termination in json value escaping permits out-of-bounds reads

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-170

Description

A flaw was found in mod_qos. An unauthenticated remote attacker could cause a Denial of Service (DoS) by sending a specially crafted JSON request when JSON body filtering is enabled. Due to improper string termination during the processing of percent-encoded input, the module reads past allocated memory boundaries, which can cause an Apache worker process to crash.

Affected products

pbuchbinder mod_qos: 11.74, 11.76, 11.79

References

https://access.redhat.com/security/cve/CVE-2026-114457
https://bugzilla.redhat.com/show_bug.cgi?id=2558311

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