CVE-2026-42556

Published May 8th, 2026

View on NVD ↗

CVSS v3

8.9

HIGH

CVSS v2

N/A

Affected

PROJECT

Description

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.

gitroomhq/postiz-app

📨 The ultimate agentic social media scheduling tool 🤖

GitHub

32.4K