On Mon, May 04, 2026 at 02:15:25PM +0000, Eric Covener wrote: > Severity: low > > Affected versions: > > - Apache HTTP Server through 2.4.66 > > 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.
As confirmed by Eric off-list, the above line is erroneous. It should say "upgrade to version 2.4.67", not 2.4.66. The website has it right: https://httpd.apache.org/security/vulnerabilities_24.html "Users are recommended to upgrade to version 2.4.67, which fixes this issue, or remove mod_dav_lock." > Credit: > > Pavel Kohout, Aisle Research, Aisle.com (finder) > > References: > > https://httpd.apache.org/security/vulnerabilities_24.html > https://httpd.apache.org/ > https://www.cve.org/CVERecord?id=CVE-2026-29169 > > Timeline: > > 2026-03-04: Report received > 2026-05-04: 2.4.67 released > 2026-05-04: fixed in 2.4.x by r1933354 Alexander
