CVE-2026-101890: Prime Mover < 2.2.1 Stored XSS via Package Metadata
The Prime Mover plugin for WordPress before 2.2.1 contains a stored cross-site scripting vulnerability that allows attackers to execute arbitrary JavaScript by injecting an unescaped sitetitle value in a package's footprint.json file. Attackers can place a crafted package under the prime-mover-export-files directory so that the malicious value renders unescaped in the columnsitetitle() method of PrimeMoverBackupMenuListTable.php, triggering script execution in an administrator's browser when they view the Prime Mover Packages list table without needing to restore the package.
Affected Software
Event History
Frequently Asked Questions
Who is at risk of script execution?
Administrators are at risk when they view the Prime Mover Packages list table containing a crafted package. The package does not need to be restored for the script to execute.
What does an attacker need to exploit this issue?
The attacker needs the ability to place a crafted package under the prime-mover-export-files directory. The package's footprint.json must contain a malicious site_title value, and an administrator must view the package list.
Which installations are affected, and what can be done before updating?
Prime Mover versions before 2.2.1 are affected. Until updated, prevent untrusted parties from placing packages in the prime-mover-export-files directory and avoid viewing package listings that may contain untrusted packages.