CVE-2026-16957
LowCVSS 2.7Exploitation Probability (EPSS)
Low risk8th percentile - higher than 8% of all known CVEs
Summary
The Slim SEO WordPress plugin before version 4.9.11 does not restrict a post-meta preview feature to posts the user is allowed to edit, verifying only read access, allowing users with the Contributor role to read arbitrary post meta, including protected and private keys, of published posts they do not own, including password-protected posts and posts of non-public post types.
Risk Assessment
The risk includes disclosure of sensitive meta data, including protected and private keys, which may compromise data confidentiality and site security.
Recommendation
It is recommended to immediately update the Slim SEO plugin to version 4.9.11 or later, which includes the security fix.
Original NVD description (English source)
The Slim SEO WordPress plugin before 4.9.11 does not restrict a post-meta preview feature to posts the user is allowed to edit, verifying only read access, allowing users with the Contributor role to read arbitrary post meta, including protected and private keys, of published posts they do not own, including password-protected posts and posts of non-public post types.