ZoneMinder before 1.38.4 fails to apply per-monitor access restrictions in the FramesController index endpoint. Authenticated users with Events view permission can call the frames API to list frame records from monitors they are denied access to, disclosing event and frame metadata across monitor boundaries.
https://github.com/ZoneMinder/zoneminder/security/advisories/GHSA-mg2g-jmfc-3w8g
https://github.com/ZoneMinder/zoneminder/releases/tag/1.38.4
https://github.com/ZoneMinder/zoneminder/commit/efe6c60d8798c60ab41b120dc034488388c47dda
https://github.com/ZoneMinder/zoneminder/commit/aafe580b231bbeead12a110a957d85a26f7a23be
https://github.com/ZoneMinder/zoneminder/blob/1.38.3/web/api/app/Controller/FramesController.php#L51
Published: 2026-09-28
Updated: 2026-09-30
Base Score: 4
Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:N/A:N
Severity: Medium
Base Score: 4.3
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Severity: Medium
Base Score: 5.3
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Severity: Medium
EPSS: 0.00222