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CVE-2026-21866
Published: Mar 3, 2026
Modified: Mar 4, 2026
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.
| Vendor | Product | Versions |
|---|---|---|
langgenius | dify | affected < 1.11.2 |
Weaknesses (CWE)
References
https://github.com/langgenius/dify/security/advisories/GHSA-qpv6-75c2-75h4
x_refsource_CONFIRM
https://github.com/langgenius/dify/pull/29811
x_refsource_MISC
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