What’s Vulnerable › Vulnerabilities

CVE-2026-101890: Prime Mover < 2.2.1 Stored XSS via Package Metadata

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-01 · updated 2026-10-02
• Weakness: CWE-79

Description

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 site_title 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 column_site_title() 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 products

• Codexonics Prime Mover: before 2.2.1 — fixed in 2.2.1

How to fix

Upgrade to a fixed version: Codexonics Prime Mover 2.2.1. Check the vendor advisory for mitigations.

References

• https://wordpress.org/plugins/prime-mover/#developers
• https://www.vulncheck.com/advisories/prime-mover-stored-xss-via-package-metadata

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