Stored Cross-Site Scripting Vulnerability in Nexter Extension for WordPress

CVE-2025-13731

What is CVE-2025-13731?

The Nexter Extension – Site Enhancements Toolkit plugin for WordPress exhibits a vulnerability that enables stored Cross-Site Scripting (XSS) due to inadequate input sanitization and output escaping in the 'nxt-year' shortcode. Authenticated attackers with Contributor-level access or higher can exploit this flaw, allowing them to inject malicious web scripts that execute whenever users access compromised pages. This vulnerability poses significant risks to site integrity and user security, necessitating prompt remediation for all affected versions.

Human OS v1.0:
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References