| Name | CVE-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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4571-1, DSA-6248-1 |
| Debian Bugs | 1135737 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| apache2 (PTS) | bullseye | 2.4.62-1~deb11u1 | vulnerable |
| bullseye (security) | 2.4.67-1~deb11u1 | fixed | |
| bookworm | 2.4.66-1~deb12u1 | vulnerable | |
| bookworm (security) | 2.4.67-1~deb12u2 | fixed | |
| trixie | 2.4.66-1~deb13u2 | vulnerable | |
| trixie (security) | 2.4.67-1~deb13u2 | fixed | |
| forky | 2.4.66-8 | vulnerable | |
| sid | 2.4.67-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| apache2 | source | bullseye | 2.4.67-1~deb11u1 | DLA-4571-1 | ||
| apache2 | source | bookworm | 2.4.67-1~deb12u2 | DSA-6248-1 | ||
| apache2 | source | trixie | 2.4.67-1~deb13u2 | DSA-6248-1 | ||
| apache2 | source | (unstable) | 2.4.67-1 | 1135737 |
http://www.openwall.com/lists/oss-security/2026/05/04/20
https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2026-29169
https://github.com/apache/httpd/commit/225dc070adba11040b774cf641e1d8bc79941643 (2.4.67-rc1-candidate)