CVE-2026-15780
The WP Statistics – Simple, privacy-friendly Google Analytics alternative plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'utm_campaign' parameter in all versions up to, and including, 14.16.8 due to insufficient input…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.65%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The WP Statistics – Simple, privacy-friendly Google Analytics alternative plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'utm_campaign' parameter in all versions up to, and including, 14.16.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload can be planted without authentication via the public /wp-statistics/v2/hit REST endpoint, because the required signature is exposed on the public homepage and a base64-encoded page_uri POST parameter overrides the previously sanitized REQUEST_URI, allowing the malicious utm_campaign value to bypass sanitization and be stored in the database.
- CVSS 3.1
- 7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- EPSS
- 0.65% probability · 51th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Source
- security@wordfence.com
EPSS 0.6% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/wp-statistics/wp-statistics/commit/6ab74427778b89c9e88471e9dd7407d9055a9b34
- https://plugins.trac.wordpress.org/browser/wp-statistics/tags/14.16.7/assets/dev/javascript/helper.js#L267
- https://plugins.trac.wordpress.org/browser/wp-statistics/tags/14.16.7/includes/api/v2/class-wp-statistics-api-hit.php#L78
- https://plugins.trac.wordpress.org/browser/wp-statistics/tags/14.16.7/includes/class-wp-statistics-helper.php#L1462
- https://plugins.trac.wordpress.org/browser/wp-statistics/tags/14.16.7/includes/class-wp-statistics-hits.php#L102
- https://plugins.trac.wordpress.org/browser/wp-statistics/tags/14.16.7/views/components/tables/referred-visitors.php#L79
- https://plugins.trac.wordpress.org/browser/wp-statistics/tags/14.16.7/views/components/tables/visitors.php#L94
- https://plugins.trac.wordpress.org/browser/wp-statistics/tags/14.16.8/assets/dev/javascript/helper.js#L267
- https://plugins.trac.wordpress.org/browser/wp-statistics/tags/14.16.8/includes/api/v2/class-wp-statistics-api-hit.php#L78
- https://plugins.trac.wordpress.org/browser/wp-statistics/tags/14.16.8/includes/class-wp-statistics-helper.php#L1462
- https://plugins.trac.wordpress.org/browser/wp-statistics/tags/14.16.8/includes/class-wp-statistics-hits.php#L102
- https://plugins.trac.wordpress.org/browser/wp-statistics/tags/14.16.8/views/components/tables/referred-visitors.php#L79
- https://plugins.trac.wordpress.org/browser/wp-statistics/tags/14.16.8/views/components/tables/visitors.php#L94
- https://www.wordfence.com/threat-intel/vulnerabilities/id/b5baecfe-ce0b-4cec-8462-bfd7eadd41e9?source=cve
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.