CVE-2026-12907
The RTMKit WordPress plugin before 2.0.9 does not perform a proper capability check on one of its -builder AJAX actions, allowing users with at least the Author role to create and activate a site-wide template that overrides the header, footer or other global areas displayed to all visitors, which is normally restricted to administrators.
No public exploitation has been reported so far. No distribution fix is listed yet; apply vendor mitigations and monitor.
Recommended action: Track your distribution's security tracker and apply the fix as soon as it ships.
Severity metrics
CVSS 3.1 : 2.7 LOW
Vector: AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
Affected & fixed versions by distribution
Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.
No affected package in the tracked watchlist yet (Debian, Ubuntu, Arch, SUSE, Red Hat...). Triage may still be pending.