CVE-2026-5231
WP Statistics <= 14.16.4 - Unauthenticated Stored Cross-Site Scripting via 'utm_source' Parameter
- 7.2HighCVSS base score
- 0.48%Exploitation in 30 daysEPSS · top 58% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Wordfence
- 17 days later
· 17 days later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | High7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| NVDNVD · Deferred | 3.1 | High7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.48% · top 58% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.
Affected products
veronalabs · WP Statistics – Simple, privacy-friendly Google Analytics alternative
- affected ≤ 14.16.4
References
References6
- https://www.wordfence.com/threat-intel/vulnerabilities/id/9b350b48-05ba-4054-895f-36d7ad71459d?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wp-statistics/trunk/assets/dev/javascript/chart.js#L498 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wp-statistics/tags/14.16.4/assets/dev/javascript/chart.js#L498 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wp-statistics/trunk/src/Service/Analytics/Referrals/ReferralsParser.php#L62 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wp-statistics/tags/14.16.4/src/Service/Analytics/Referrals/ReferralsParser.php#L62 (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3503795%40wp-statistics%2Ftrunk&old=3483860%40wp-statistics%2Ftrunk&sfp_email=&sfph_mail= (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-23342 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-5231)Record last updated .