Vulnerability Description
The SlimStat Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'fh' (fingerprint) parameter in all versions up to, and including, 5.3.5 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/wp-slimstat/tags/5.3.5/admin/view/rig
- https://plugins.trac.wordpress.org/browser/wp-slimstat/tags/5.3.5/wp-slimstat.ph
- https://plugins.trac.wordpress.org/changeset/3477417/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/e991fbdf-8e26-4d2e-8e3
FAQ
What is CVE-2026-1238?
CVE-2026-1238 is a vulnerability with a CVSS score of 7.2 (HIGH). The SlimStat Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'fh' (fingerprint) parameter in all versions up to, and including, 5.3.5 due to insufficient input sani...
How severe is CVE-2026-1238?
CVE-2026-1238 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-2026-1238?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.