---
id: CVE-2026-114457
title: >-
  Mod_qos: missing nul termination in json value escaping permits out-of-bounds
  reads
summary: >-
  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
  processi…
severity: low
cvss: 3.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L'
cvssSource: cna
cwe:
  - CWE-170
vendor: pbuchbinder
product: mod_qos
affected:
  - mod_qos 11.74
  - mod_qos 11.76
  - mod_qos 11.79
published: '2026-10-22'
updated: '2026-10-22'
sourceUpdated: '2026-10-22T06:37:03.333Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-114457'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-114457'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2558311'
    label: RHBZ#2558311
tags:
  - cve.org
ingestedAt: '2026-10-22T07:32:31.147Z'
---

## Overview

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

- `mod_qos 11.74`
- `mod_qos 11.76`
- `mod_qos 11.79`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.