CVE-2026-42528

Apache HTTP Server: mod_dav shared lock overflow

State: Published
Severity: 4.3 Medium
Published: Oct 1, 2026
Updated: Oct 1, 2026
Reserved: Apr 28, 2026

Description

A memory calculation bug in mod_dav in Apache httpd 2.4.67 and earlier allows an attacker with permission to create WebDAV locks to crash server child processes.

Users are recommended to upgrade to version 2.4.69, which fixes this issue

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L	CISA-ADP

Weaknesses

CWE-789 Memory Allocation with Excessive Size Value

Affected Products

Product	Versions
Apache HTTP ServerApache Software Foundation	2.4.68 and earlierAffected

References

https://httpd.apache.org/security/vulnerabilities_24.htmlvendor-advisory
http://www.openwall.com/lists/oss-security/2026/10/01/12

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