CVE-2026-15780 json
WP Statistics <= 14.16.8 - Unauthenticated Stored Cross-Site Scripting via 'utm_campaign' Parameter
published 2026-08-19 2 mo ago modified 2026-08-20 2 mo ago also EUVD-2026-62341
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- veronalabs WP Statistics – Simple, privacy-friendly Google Analytics alternative
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- github.com /wp-statistics/wp-statistics/commit/6ab74427778b89c9e88471e9dd7407d9055a9b34
- wordfence.com /threat-intel/vulnerabilities/id/b5baecfe-ce0b-4cec-8462-bfd7eadd41e9?source=cve
- plugins.trac.wordpress.org /browser/wp-statistics/tags/14.16.8/views/components/tables/visitors.php#L94
- plugins.trac.wordpress.org /browser/wp-statistics/tags/14.16.8/views/components/tables/referred-visitors.php#L79
- plugins.trac.wordpress.org /browser/wp-statistics/tags/14.16.8/assets/dev/javascript/helper.js#L267
- plugins.trac.wordpress.org /browser/wp-statistics/tags/14.16.8/includes/api/v2/class-wp-statistics-api-hit.php#L78
- plugins.trac.wordpress.org /browser/wp-statistics/tags/14.16.8/includes/class-wp-statistics-helper.php#L1462
- plugins.trac.wordpress.org /browser/wp-statistics/tags/14.16.8/includes/class-wp-statistics-hits.php#L102
- plugins.trac.wordpress.org /browser/wp-statistics/tags/14.16.7/views/components/tables/visitors.php#L94
- plugins.trac.wordpress.org /browser/wp-statistics/tags/14.16.7/views/components/tables/referred-visitors.php#L79
- plugins.trac.wordpress.org /browser/wp-statistics/tags/14.16.7/assets/dev/javascript/helper.js#L267
- plugins.trac.wordpress.org /browser/wp-statistics/tags/14.16.7/includes/api/v2/class-wp-statistics-api-hit.php#L78
- plugins.trac.wordpress.org /browser/wp-statistics/tags/14.16.7/includes/class-wp-statistics-helper.php#L1462
- plugins.trac.wordpress.org /browser/wp-statistics/tags/14.16.7/includes/class-wp-statistics-hits.php#L102
Sources
- CVE List CVE-2026-15780
- NVD CVE-2026-15780
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.