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CVE-2026-42556

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CVSS 3.1
9.0 critical
EPSS
<1%p17
Published
()
Modified
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/ ?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.

Vendors
gitroom
Products
postiz
Weakness
CWE-79
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
NVD CVE.org GitHub PoCs EPSS (0.3%)

In the news

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