Denial of Service Vulnerability in mod_qos for Apache Web Server
CVE-2026-114459

3.7LOW

Key Information:

Vendor

Pbuchbinder

Status
Mod Qos
Vendor
CVE Published:
22 October 2026

What is CVE-2026-114459?

A flaw has been identified in the mod_qos module of the Apache Web Server. This vulnerability arises from improper boundary checking during the inspection of HTTP response bodies, which can enable an unauthenticated remote attacker to exploit the flaw. By crafting specific server responses, the attacker can cause an Apache worker process to read memory outside of its allocated buffer, leading to a crash. Such behavior results in a Denial of Service (DoS), compromising the availability of the affected Apache server.

Affected Version(s)

mod_qos 11.74

mod_qos 11.76

mod_qos 11.79

References

https://access.redhat.com/security/cve/CVE-2026-114459
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2558397
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
3.7
Severity:
LOW
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
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.
.