CVE-2026-48945

The K2 article gallery upload path accepts a zip/tar archive, extracts it under /media/k2/galleries//, and only renames image files gif/jpg/jpeg/png/webp to safe names — non-image files including .php are extracted as-is and remain executable via direct HTTP access...

CVE-2026-48941

The K2 frontend item.checkin task accepts an unauthenticated sigProFolder query parameter and uses it directly to address a JFolder::delete call under /media/k2/galleries/...