CVE-2026-7634

High

Published: 28/05/2026(UTC)Translated: 15/06/2026(UTC)NVD NIST

Summary

The SlimStat Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) via the 'User-Agent' header in all versions up to and including 5.4.11 due to insufficient input sanitization and output escaping. This allows attackers to inject arbitrary web scripts that will execute whenever a user accesses an injected page.

Risk Assessment

This vulnerability poses a risk to users who may be exposed to malicious code execution, potentially leading to data theft or session hijacking. Organizations should be aware that attackers can exploit this flaw for harmful activities.

Recommendation

It is recommended to update the SlimStat Analytics plugin to the latest version to mitigate this vulnerability. Additionally, administrators should disable the 'show_complete_user_agent_tooltip' setting to minimize risk.

Original NVD description (English source)

The SlimStat Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'User-Agent' header in all versions up to, and including, 5.4.11 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The show_complete_user_agent_tooltip setting must be explicitly enabled by an administrator (disabled by default) for the stored payload to be rendered and executed.