CVE-2025-9277
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-08-26

Last updated on: 2025-08-29

Assigner: Wordfence

Description
The SiteSEO – SEO Simplified plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the broken preg_replace expression in all versions up to, and including, 1.2.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
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Meta Information
Published
2025-08-26
Last Modified
2025-08-29
Generated
2026-06-16
AI Q&A
2025-08-27
EPSS Evaluated
2026-06-14
NVD
CVE-2025-9277
EUVD
EUVD-2025-25954
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
wordpress siteseo *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) issue in the SiteSEO – SEO Simplified plugin for WordPress. It occurs due to a broken preg_replace expression that fails to properly sanitize and escape input. Authenticated users with Contributor-level access or higher can inject malicious scripts into pages, which then execute whenever any user views those pages.

Impact Analysis

The vulnerability allows attackers with Contributor-level access or above to inject arbitrary scripts into web pages. This can lead to unauthorized actions such as stealing user credentials, session hijacking, defacement, or spreading malware to users who visit the infected pages.

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