Use After Free Vulnerability in Apache HTTP Server with mod_ldap
CVE-2026-29167

9.8CRITICAL

Key Information:

Vendor

Apache
Status
Apache Http Server
Vendor
CVE Published:
8 June 2026

What is CVE-2026-29167?

A Use After Free vulnerability in the Apache HTTP Server, specifically in the mod_ldap module under per-directory configuration, can expose the server to potential exploitation. This vulnerability affects versions 2.4.0 to 2.4.67. Users should promptly upgrade to version 2.4.68 or later to remedy this security issue and protect their web server from malicious actors who may exploit this flaw.

Affected Version(s)

Apache HTTP Server 2.4.0 <= 2.4.67

References

https://httpd.apache.org/security/vulnerabilities_24.html
vendor-advisory

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Pavel Kohout, Aisle Research, Aisle.com
.