Vulnerability in Prime Mover – Backup and Migration — CVE-2026-101889
HighSeverity
—Estimated exploit probability
10,000+ sitesInstalls
2.2.1Fixed in
What to do now
Update Prime Mover – Backup and Migration to 2.2.1 or later.
Affected versions
- Everything before 2.2.1
Affected: Prime Mover – Backup and Migration (plugin, prime-mover)
What the vulnerability is
The Prime Mover plugin for WordPress before 2.2.1 contains a path traversal vulnerability that allows authenticated administrators to delete arbitrary directories by importing a crafted WPRIME/TAR package with manipulated tar_root_folder values in wprime-config.json. Attackers can exploit insufficient path validation in computeExtractVariables() and validateImportedSiteVsPackage() to cause primeMoverDoDelete() to remove directories outside the intended extraction path, potentially deleting critical WordPress directories such as wp-admin and rendering the site inoperable.