CVE-2025-9620: Seo Monster <= 3.3.3 - Cross-Site Request Forgery to Stored Cross-Site Scripting

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-09-11 · updated 2026-06-17
Weakness: CWE-352

Description

The Seo Monster plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.3.3. This is due to missing or incorrect nonce validation on the check_integration() function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected products

edsteep Seo Monster: through 3.3.3

References

https://plugins.trac.wordpress.org/browser/seo-monster/trunk/inc/class_seo_monster_ui.php#L69
https://plugins.trac.wordpress.org/browser/seo-monster/trunk/tpl/integration.php#L42
https://www.wordfence.com/threat-intel/vulnerabilities/id/d224151c-0fe2-4032-a847-39628cc2f520?source=cve

Get alerted when CVE-2025-9620 or the next vulnerability affects your stack