CVE-2025-66481 — DeepChat's Incomplete XSS Fix Allows RCE through Mermaid Content
DeepChat is an open-source AI chat platform that supports cloud models and LLMs. Versions 0.5.1 and below are vulnerable to XSS attacks through improperly sanitized Mermaid cont…
Published: 2025-12-09 · CVSS: 9.7 · CVSS 3.1
DeepChat is an open-source AI chat platform that supports cloud models and LLMs. Versions 0.5.1 and below are vulnerable to XSS attacks through improperly sanitized Mermaid content. The recent security patch for MermaidArtifact.vue is insufficient and can be bypassed using unquoted HTML attributes combined with HTML entity encoding. Remote Code Execution is possible on the victim's machine via the electron.ipcRenderer interface, bypassing the regex filter intended to strip dangerous attributes. There is no fix at time of publication.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7