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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History
Wed, 04 Mar 2026 22:15:00 +0000
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Wed, 04 Mar 2026 15:00:00 +0000
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Tue, 03 Mar 2026 22:00:00 +0000
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| 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. | |
| Title | Dify - Stored XSS in chat | |
| Weaknesses | CWE-79 | |
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cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-03-03T21:42:25.311Z
Updated: 2026-03-04T21:18:08.260Z
Reserved: 2026-01-05T16:44:16.368Z
Link: CVE-2026-21866
Updated: 2026-03-04T21:18:03.261Z
Status : Awaiting Analysis
Published: 2026-03-03T22:16:27.973
Modified: 2026-03-04T18:08:05.730
Link: CVE-2026-21866
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