CVE-2026-16559
MediumCVSS 6.8Exploitation Probability (EPSS)
Low risk13th percentile - higher than 13% of all known CVEs
Summary
The YMC Filter WordPress plugin before version 3.12.9 does not sanitize SVG files uploaded through one of its icon upload features and permits their upload by low-privileged users. Users with the Author role and above can upload a file containing JavaScript that executes in the site's origin when the file is viewed.
Risk Assessment
An attacker with Author role can execute arbitrary script in the browser of an administrator or other users, potentially leading to session hijacking, data theft, or further compromise of the site.
Recommendation
Update the YMC Filter plugin to version 3.12.9 or later, which includes the SVG sanitization fix. Additionally, restrict file upload permissions to trusted users only.
Other vulnerabilities in YMC Filter
See all- CVE-2026-109983Medium
The YMC Filter plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'post_title' parameter in all versions up to and including 3.12.19 due to insufficient input sanitization and output escaping. Authenticated attackers with author-level access can inject arbitrary web scripts that execute when a user visits the affected page.
- CVE-2026-16558Medium
The YMC Filter WordPress plugin before version 3.12.8 does not sanitize and escape a layout builder setting before outputting it on a public endpoint, and does not verify object ownership when the setting is saved. Users with the Contributor role and above can store JavaScript that executes in the browser of any visitor viewing an affected filter.
Original NVD description (English source)
The YMC Filter WordPress plugin before 3.12.9 does not sanitize SVG files uploaded through one of its icon upload features and permits their upload by low-privileged users, allowing users with the Author role and above to upload a file containing JavaScript that executes in the site's origin when the file is viewed.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS