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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HThinkinai Deepchat
APPThinkinai≤ 0.5.1
Related vulnerabilities
RCE przez XSS w komponencie Mermaid w DeepChat (Electron IPC)
Stored XSS eskalowany do RCE w DeepChat poprzez renderer Mermaid
RCE przez XSS w komponencie Mermaid w aplikacji DeepChat
RCE jednym kliknięciem w DeepChat przez niebezpieczny handler URL