Off-by-One Pointer Calculation Flaw in mod_qos Affects Red Hat Products
CVE-2026-114460

5.3MEDIUM

Key Information:

Vendor

Pbuchbinder

Status
Mod Qos
Vendor
CVE Published:
22 October 2026

What is CVE-2026-114460?

A flaw has been identified in mod_qos, a module used for managing request quality of service. This vulnerability arises from an off-by-one pointer calculation error while merging request body parameters with an existing URL query. As a result, the query string may be truncated during security evaluations, which does not affect the actual request. An attacker can exploit this security flaw by sending a specially crafted request that hides prohibited values from being inspected, effectively enabling them to circumvent established security measures.

Affected Version(s)

mod_qos 11.74

mod_qos 11.76

mod_qos 11.79

References

https://access.redhat.com/security/cve/CVE-2026-114460
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2558401
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Robin "drzobin" Larsson for reporting this issue.
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