Vulnerability Details CVE-2026-42556
Postiz is an AI social media scheduling tool. From version 2.21.6 to before version 2.21.7, any authenticated user who can create a post can store arbitrary HTML in post content by tampering their own save request and send the public preview link /p/<postId>?share=true to another user. The preview page renders that stored HTML with dangerouslySetInnerHTML on the main application origin. This issue has been patched in version 2.21.7.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 13.6%
CVSS Severity
CVSS v3 Score 8.9
References