CVE-2026-29169
HIGH7.5EPSS 0.58%Apache HTTP Server: mod_dav_lock indirect lock crash
Published: 5/4/2026Modified: 5/6/2026
Also known as:ALPINE-CVE-2026-29169BIT-apache-2026-29169
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.
Affected packages (3)
- Alpine/apache2from 0, < 2.4.67-r0
- Bitnami/apachefrom 0, < 2.4.67
- Debian/apache2from 0, < 2.4.67-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References (6)
- ADVISORYhttps://security.alpinelinux.org/vuln/CVE-2026-29169
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2026-29169
- WEBhttps://httpd.apache.org/security/vulnerabilities_24.html
- WEBhttps://nvd.nist.gov/vuln/detail/CVE-2026-29169
- WEBhttp://www.openwall.com/lists/oss-security/2026/05/04/20
- WEBhttp://www.openwall.com/lists/oss-security/2026/05/05/12