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Vulnerability DatabaseCVE-2025-8621
CVE-2025-8621:
WordPress vulnerability analysis and mitigation
Overview
The Mosaic Generator plugin for WordPress contains a Stored Cross-Site Scripting vulnerability (CVE-2025-8621) discovered in August 2025. The vulnerability affects all versions up to and including 1.0.5, where insufficient input sanitization and output escaping in the 'c' parameter allows authenticated attackers with Contributor-level access or higher to inject malicious web scripts (NVD CVE).
Technical details
The vulnerability has been assigned a CVSS v3.1 Base Score of 6.4 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N. The technical weakness has been classified as CWE-80 (Improper Neutralization of Script-Related HTML Tags in a Web Page). The vulnerability specifically relates to insufficient sanitization of the 'c' parameter, allowing for stored XSS attacks (NVD CVE).
Impact
When exploited, the vulnerability allows attackers to inject arbitrary web scripts that execute whenever a user accesses an affected page. This can lead to potential theft of sensitive information, session hijacking, or other malicious actions performed in the context of the affected user's browser (NVD CVE).
Mitigation and workarounds
As of August 7, 2025, the plugin has been temporarily closed and is not available for download pending a full security review (WordPress Plugin).
Additional resources
Source: This report was generated using AI
Related WordPress vulnerabilities:
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