WordPress BackWPup plugin <= 5.6.6 - Authenticated (Administrator+) Local File Inclusion via 'block_name' Parameter vulnerability

Authenticated Administrator+ Local File Inclusion via 'blockname' Parameter vulnerability discovered by PixelDefaultBR - Think IT in WordPress Plugin BackWPup versions = 5.6.6...

CVE-2026-6227

The BackWPup plugin for WordPress is vulnerable to Local File Inclusion via the blockname parameter of the /wp-json/backwpup/v1/getblock REST endpoint in all versions up to, and including, 5.6.6 due to a non-recursive strreplace sanitization of path traversal sequences. This makes it possible for...