CVE-2026-40506

Description

OpenEMR before 8.2.0 contains a path traversal vulnerability in the standard_tables_manage.php interface where the db GET parameter is passed without validation to temp_dir_cleanup(), which joins the value to the PHP temporary directory path and recursively deletes the resulting directory. Attackers can supply a traversal sequence in the db parameter to resolve outside the intended temporary directory, and by chaining this with an open redirect in dicom_frame.php, an unauthenticated attacker can deliver a crafted URL that triggers arbitrary recursive directory deletion within an authenticated Superuser's session.

References

• https://github.com/openemr/openemr/commit/2d8a69f0f343c8e8c6ee1b42d224c24a7a4ba415
• https://github.com/openemr/openemr/pull/11951
• https://github.com/openemr/openemr/releases/tag/v8_2_0
• https://github.com/openemr/openemr/security/advisories/GHSA-hj9x-33vw-5g3x
• https://www.vulncheck.com/advisories/openemr-path-traversal-arbitrary-directory-deletion-via-standard-tables-manage-php