CVE-2026-21866

Dify (open-source LLM app platform) is affected by a stored XSS in Mermaid rendering prior to version 1.11.2 due to securityLevel: loose; this may allow execution of unsafe content in chats. The issue is fixed in 1.11.2. CVSS v4 base score 5.1 (Medium); attack vector NETWORK, low attack complexit...