PT-2025-34820 · WordPress · Siteseo – Seo Simplified

Matthew Rollings · Published 2025-08-26 · Updated 2025-08-27 · CVE-2025-9277

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: SiteSEO – SEO Simplified plugin for WordPress versions up to and including 1.2.7

Description: The SiteSEO – SEO Simplified plugin for WordPress is susceptible to Stored Cross-Site Scripting due to a broken preg replace expression and insufficient input sanitization and output escaping. Authenticated attackers with Contributor-level access or higher can inject arbitrary web scripts into pages. These scripts will execute when a user accesses the injected page.

Recommendations: Update SiteSEO – SEO Simplified plugin for WordPress to a version later than 1.2.7.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-9277

Affected Products

Siteseo – Seo Simplified

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2025-9277 · Security Note
• https://wordfence.com/threat-intel/vulnerabilities/id/b8c7cca2-94d2-4a86-bc69-d7b2b0f068ba?source=cve · Note
• https://plugins.trac.wordpress.org/browser/siteseo/tags/1.2.6/main/advanced.php#L80 · Note
• https://twitter.com/EnigmaSecurity_/status/1960540405813940288 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1960499225059262872 · Twitter Post
• https://twitter.com/CVEnew/status/1960470825204900208 · Twitter Post
• https://t.me/CVEtracker/30992 · Telegram Post