Vulnerability Description
The WP Statistics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'utm_source' parameter in all versions up to, and including, 14.16.4. This is due to insufficient input sanitization and output escaping. The plugin's referral parser copies the raw utm_source value into the source_name field when a wildcard channel domain matches, and the chart renderer later inserts this value into legend markup via innerHTML without escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in admin pages that will execute whenever an administrator accesses the Referrals Overview or Social Media analytics pages.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/wp-statistics/tags/14.16.4/assets/dev
- https://plugins.trac.wordpress.org/browser/wp-statistics/tags/14.16.4/src/Servic
- https://plugins.trac.wordpress.org/browser/wp-statistics/trunk/assets/dev/javasc
- https://plugins.trac.wordpress.org/browser/wp-statistics/trunk/src/Service/Analy
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new
- https://www.wordfence.com/threat-intel/vulnerabilities/id/9b350b48-05ba-4054-895
FAQ
What is CVE-2026-5231?
CVE-2026-5231 is a vulnerability with a CVSS score of 7.2 (HIGH). The WP Statistics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'utm_source' parameter in all versions up to, and including, 14.16.4. This is due to insufficient input sani...
How severe is CVE-2026-5231?
CVE-2026-5231 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-5231?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.