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.
CVSS 8.9EPSS 0.258%Risk 0.91
View source- Published
- 2026-05-08 23:16:39
- Affected versions
- >=2.21.6,<2.21.7
- Type
- Core software
- Last modified
- 2026-07-24 21:10:00
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L