CVE-2026-2594
MediumCVSS 6.4Exploitation Probability (EPSS)
Low risk15th percentile - higher than 15% of all known CVEs
Summary
The Smart Custom Fields plugin for WordPress up to version 5.0.7 is vulnerable to Stored Cross-Site Scripting (XSS). This is due to insufficient input sanitization and output escaping of uploaded image attachment titles. Authenticated attackers with Author-level access or higher can inject arbitrary web scripts that execute when users access the affected page.
Risk Assessment
The risk includes potential account compromise, session hijacking, or distribution of malicious content within the WordPress site. Attackers with relatively low privileges can persistently infect pages, threatening data integrity and confidentiality.
Recommendation
Immediately update the Smart Custom Fields plugin to the latest available version that includes a complete patch. Additionally, restrict user permissions to the minimum necessary and regularly audit content published by authors.
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Original NVD description (English source)
The Smart Custom Fields plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 5.0.7. This is due to insufficient input sanitization and output escaping of uploaded image attachment titles. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. NOTE: This vulnerability was partially patched in 5.0.7.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

