MEDIUM 4.9 NVD
CVE-2026-18386
The WP BackItUp Community Edition plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 2.1.0 via the 'backup_file' pa
The WP BackItUp Community Edition plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 2.1.0 via the 'backup_file' parameter parameter. This makes it possible for authenticated attackers, with administrator-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information. The basename() normalization present in the handler only executes when the traversed target path does not exist, providing no protection against reads of existing files.
References
- https://plugins.trac.wordpress.org/browser/wp-backitup/tags/2.0.0/lib/includes/class-wpbac
- https://plugins.trac.wordpress.org/browser/wp-backitup/tags/2.0.0/lib/includes/handler_dow
- https://plugins.trac.wordpress.org/browser/wp-backitup/tags/2.0.0/lib/includes/handler_dow
- https://plugins.trac.wordpress.org/browser/wp-backitup/tags/2.0.0/lib/includes/handler_dow
- https://plugins.trac.wordpress.org/browser/wp-backitup/tags/2.1.0/lib/includes/class-wpbac
This medium severity vulnerability with a CVSS score of 4.9 was published on 2026-09-10 via NVD.
vulnfeed aggregates 13138 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.