Kirby: Access to image files and limited access to JSON files outside of the site root via path traversal in the media handling
Kirby is an open-source content management system. Prior to 4.9.5 and 5.5.2, depending on the release line, Kirby's media handler in src/Cms/Media.php allowed Kirby\Cms\Media::thumb() to append a path-bearing filename to a validated parent media directory. On nginx, PHP's built-in server, or Apache with AllowEncodedSla…
Severity high: primary CNA CVSS 8.2 v4.0 (worst CNA-provided scenario) Not listed in this KEV snapshot. Forecast present in this snapshot.
Published 2026-08-31T20:53:00.338Z. Updated 2026-09-01T14:31:42.348Z.