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.
References
| Link | 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 |
Configurations
History
05 May 2026, 21:16
| Type | Values Removed | Values Added |
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| References |
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05 May 2026, 02:36
| Type | Values Removed | Values Added |
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| First Time |
Apache http Server
Apache |
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| References | () https://httpd.apache.org/security/vulnerabilities_24.html - Vendor Advisory | |
| References | () http://www.openwall.com/lists/oss-security/2026/05/04/20 - Mailing List, Third Party Advisory | |
| CPE | cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* |
04 May 2026, 18:16
| Type | Values Removed | Values Added |
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| References |
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04 May 2026, 17:16
| Type | Values Removed | Values Added |
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| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.5 |
04 May 2026, 15:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-04 15:16
Updated : 2026-05-05 21:16
NVD link : CVE-2026-29169
Mitre link : CVE-2026-29169
CVE.ORG link : CVE-2026-29169
JSON object : View
Products Affected
apache
- http_server
CWE
CWE-476
NULL Pointer Dereference
