Vulnerability CVE-2026-29169: Information

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.

Severity: HIGH (7.5)
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
URL: https://nvd.nist.gov/vuln/detail/CVE-2026-29169
Published: May 4, 2026
Modified: May 5, 2026
Error type identifier: CWE-476

Fixed packages

Package name
Branch
Fixed in version
Version from repository
Errata ID
Task #
State
apache2sisyphus2.4.67-alt12.4.67-alt1ALT-PU-2026-7150-4417200Fixed
apache2sisyphus_e2k2.4.67-alt12.4.67-alt1ALT-PU-2026-7624-1-Fixed
apache2sisyphus_riscv642.4.67-alt12.4.67-alt1ALT-PU-2026-7538-1-Fixed
apache2sisyphus_loongarch642.4.67-alt12.4.67-alt1ALT-PU-2026-7484-1-Fixed
apache2p112.4.67-alt12.4.67-alt1ALT-PU-2026-7156-4417202Fixed
apache2p102.4.67-alt12.4.67-alt1ALT-PU-2026-7231-3417203Fixed
apache2p10_e2k2.4.67-alt12.4.67-alt1ALT-PU-2026-7870-1-Fixed
apache2c10f22.4.67-alt12.4.67-alt1ALT-PU-2026-7158-4417204Fixed
apache2c9f22.4.67-alt12.4.67-alt1ALT-PU-2026-7193-4417205Fixed

References to Advisories, Solutions, and Tools

Hyperlink
Resource
https://httpd.apache.org/security/vulnerabilities_24.html
  • Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/05/04/20
  • Mailing List
  • Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/05/05/12
    BDU:2026-06309
        1. cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
          End excluding
          2.4.67
      VKontakte|Telegram|YouTube|Forum|ALT Linux Space|Bugzilla
      Version: v26.2.2
      Back to top