CVE-2025-12367: SiteSEO – SEO Simplified <= 1.3.1 - Missing Authorization to Authenticated (Author+) Plugin Settings Update

Severity: medium (CVSS 4.3 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: 2025-11-01 · updated 2026-10-18
Weakness: CWE-285

Description

The SiteSEO – SEO Simplified plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 1.3.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with Author-level access and above, to enable or disable arbitrary SiteSEO features that they should not have access to.

Affected products

softaculous SiteSEO – SEO Simplified: through 1.3.1

References

https://plugins.trac.wordpress.org/browser/siteseo/tags/1.3.1/main/ajax.php#L340
https://plugins.trac.wordpress.org/changeset/3387094/siteseo/trunk/main/ajax.php?contextall=1
https://www.wordfence.com/threat-intel/vulnerabilities/id/54535bef-23c3-4045-bb37-ba28ae5461b1?source=cve

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