Security Advisory

CVE-2026-21866

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-03-03 21:42:25

Last updated 2026-03-04 21:18:08

Assigner GitHub_M

State PUBLISHED

Description

Dify is an open-source LLM app development platform. Prior to 1.11.2, Dify is vulnerable to a stored XSS issue when rendering Mermaid diagrams within chats. This occurs because Dify’s default Mermaid configuration uses securityLevel: loose, which allows potentially unsafe content to execute. This vulnerability is fixed in 1.11.2.

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