Medium severity · published Oct 1, 2026
CVE-2026-101890
Prime Mover < 2.2.1 Stored XSS via Package Metadata
5.4
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PM
Prime Mover · Codexonics
before 2.2.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-101890
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-101890
release-notes
https://wordpress.org/plugins/prime-mover/#developers
third-party-advisory
https://www.vulncheck.com/advisories/prime-mover-stored-xss-via-package-metadata
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