---
id: CVE-2026-114460
title: >-
  Mod_qos: query truncation during json body merging permits security-rule
  bypass
summary: >-
  A flaw was found in mod_qos. An off-by-one pointer calculation error occurs
  when merging request body parameters with an existing URL query, which
  truncates the query string during security evaluation while leaving the actual
  request unc…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-193
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: '2026-10-22T06:37:07.818Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-114460'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-114460'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2558401'
    label: RHBZ#2558401
tags:
  - cve.org
ingestedAt: '2026-10-22T07:32:31.146Z'
---

## Overview

A flaw was found in mod_qos. An off-by-one pointer calculation error occurs when merging request body parameters with an existing URL query, which truncates the query string during security evaluation while leaving the actual request unchanged. An unauthenticated remote attacker could exploit this vulnerability by submitting a crafted request that conceals prohibited values from inspection, resulting in a bypass of configured security rules.

## 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.