CVE-2026-101890
CVE-2026-101890
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Weakness classification (CWE)
References
- wordpress.org/plugins/prime-mover/ (release-notes, patch)
- www.vulncheck.com/advisories/prime-mover-stored-xss-via-package-metadata (third-party-advisory)
Frequently asked questions
- What is CVE-2026-101890?
- CVE-2026-101890 is a medium-severity vulnerability, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-10-01.
- How severe is CVE-2026-101890?
- Medium severity. CVSS v3 base score is 5.4 out of 10.