CVE-2026-42528

Name	CVE-2026-42528
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
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	DSA-6569-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
apache2 (PTS)	bookworm	2.4.68-1~deb12u1	vulnerable
	bookworm (security)	2.4.67-1~deb12u3	vulnerable
	trixie	2.4.68-1~deb13u1	vulnerable
	trixie (security)	2.4.69-1~deb13u1	fixed
	forky, sid	2.4.69-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
apache2	source	trixie	2.4.69-1~deb13u1		DSA-6569-1
apache2	source	(unstable)	2.4.69-1

Notes

https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2026-42528
Fixed by: https://github.com/apache/httpd/commit/a653b98099ced413982ddad6f9416e54292f4656