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CVE-2026-29167 Apache CVE debrief

CVE-2026-29167 is a Use After Free vulnerability in Apache HTTP Server with mod_ldap in per-directory configuration. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue. The CVSS score for this vulnerability is 9.8, indicating a CRITICAL severity.

Vendor
Apache
Product
HTTP Server
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-08
Original CVE updated
2026-07-23
Advisory published
2026-06-08
Advisory updated
2026-07-23

Who should care

Users of Apache HTTP Server with mod_ldap in per-directory configuration, particularly those using versions from 2.4.0 through 2.4.67.

Technical summary

The vulnerability is caused by a Use After Free issue in Apache HTTP Server with mod_ldap in per-directory configuration. This can be exploited by an attacker to potentially execute arbitrary code or cause a denial of service.

Defensive priority

high

Recommended defensive actions

  • Upgrade to Apache HTTP Server version 2.4.68 or later.
  • Refer to [ref-4](https://httpd.apache.org/security/vulnerabilities_24.html) for vendor advisory and mitigation strategies.

Evidence notes

The CVE-2026-29167 vulnerability has been analyzed and verified by official sources, including the National Vulnerability Database (NVD) and the Apache Software Foundation.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-29167 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-29167

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-29167 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-29167

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.