Vulnerability Description
A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs. The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0. Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Http Server | < 2.4.67 |
Related Weaknesses (CWE)
References
- https://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory
- http://www.openwall.com/lists/oss-security/2026/05/04/20Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2026/05/05/12
FAQ
What is CVE-2026-29169?
CVE-2026-29169 is a vulnerability with a CVSS score of 7.5 (HIGH). A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or...
How severe is CVE-2026-29169?
CVE-2026-29169 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-29169?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Http Server.