CVE-2025-14151: SlimStat Analytics <= 5.3.2 - Unauthenticated Stored Cross-Site Scripting

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-19 · updated 2026-09-30
Weakness: CWE-79

Description

The SlimStat Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'outbound_resource' parameter in the slimtrack AJAX action in all versions up to, and including, 5.3.2. This is due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

veronalabs SlimStat Analytics: through 5.3.2

References

https://plugins.trac.wordpress.org/browser/wp-slimstat/tags/5.3.2/admin/view/right-now.php#L273
https://plugins.trac.wordpress.org/browser/wp-slimstat/tags/5.3.2/admin/view/wp-slimstat-reports.php#L1341
https://plugins.trac.wordpress.org/changeset/3421814/wp-slimstat/trunk?contextall=1&old=3401545&old_path=%2Fwp-slimstat%2Ftrunk#file4
https://www.wordfence.com/threat-intel/vulnerabilities/id/6ee675dd-5b43-439f-9717-6c531e9bf066?source=cve

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