CVE-2026-42556 (GCVE-0-2026-42556)
Vulnerability from cvelistv5
Published
2026-05-08 22:28
Modified
2026-05-13 17:46
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Summary
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.
Impacted products
Vendor Product Version
gitroomhq postiz-app Version: >= 2.21.6, < 2.21.7
Create a notification for this product.
Show details on NVD website


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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