Vulnerability Details CVE-2025-66481
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 36.2%
CVSS Severity
CVSS v3 Score 9.6
References
Products affected by CVE-2025-66481
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cpe:2.3:a:thinkinai:deepchat:0.0.1
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cpe:2.3:a:thinkinai:deepchat:0.0.10
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cpe:2.3:a:thinkinai:deepchat:0.0.11
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cpe:2.3:a:thinkinai:deepchat:0.0.12
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cpe:2.3:a:thinkinai:deepchat:0.0.13
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cpe:2.3:a:thinkinai:deepchat:0.0.14
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cpe:2.3:a:thinkinai:deepchat:0.0.15
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cpe:2.3:a:thinkinai:deepchat:0.0.16
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cpe:2.3:a:thinkinai:deepchat:0.0.2
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cpe:2.3:a:thinkinai:deepchat:0.0.3
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cpe:2.3:a:thinkinai:deepchat:0.0.5
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cpe:2.3:a:thinkinai:deepchat:0.0.6
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cpe:2.3:a:thinkinai:deepchat:0.0.7
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cpe:2.3:a:thinkinai:deepchat:0.0.8
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cpe:2.3:a:thinkinai:deepchat:0.0.8-1
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cpe:2.3:a:thinkinai:deepchat:0.0.9
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cpe:2.3:a:thinkinai:deepchat:0.1.0
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cpe:2.3:a:thinkinai:deepchat:0.1.1
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cpe:2.3:a:thinkinai:deepchat:0.2.0
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cpe:2.3:a:thinkinai:deepchat:0.2.0-1
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cpe:2.3:a:thinkinai:deepchat:0.2.1
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cpe:2.3:a:thinkinai:deepchat:0.2.2
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cpe:2.3:a:thinkinai:deepchat:0.2.3
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cpe:2.3:a:thinkinai:deepchat:0.2.3-1
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cpe:2.3:a:thinkinai:deepchat:0.2.4
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cpe:2.3:a:thinkinai:deepchat:0.2.5
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cpe:2.3:a:thinkinai:deepchat:0.2.6
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cpe:2.3:a:thinkinai:deepchat:0.2.7
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cpe:2.3:a:thinkinai:deepchat:0.2.8
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cpe:2.3:a:thinkinai:deepchat:0.2.9
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cpe:2.3:a:thinkinai:deepchat:0.3.0
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cpe:2.3:a:thinkinai:deepchat:0.3.1
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cpe:2.3:a:thinkinai:deepchat:0.3.2
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cpe:2.3:a:thinkinai:deepchat:0.3.3
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cpe:2.3:a:thinkinai:deepchat:0.3.4
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cpe:2.3:a:thinkinai:deepchat:0.3.5
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cpe:2.3:a:thinkinai:deepchat:0.3.6
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cpe:2.3:a:thinkinai:deepchat:0.3.7
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cpe:2.3:a:thinkinai:deepchat:0.3.8
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cpe:2.3:a:thinkinai:deepchat:0.3.9
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cpe:2.3:a:thinkinai:deepchat:0.4.0
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cpe:2.3:a:thinkinai:deepchat:0.4.1
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cpe:2.3:a:thinkinai:deepchat:0.4.2
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cpe:2.3:a:thinkinai:deepchat:0.4.3
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cpe:2.3:a:thinkinai:deepchat:0.4.5
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cpe:2.3:a:thinkinai:deepchat:0.4.6
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cpe:2.3:a:thinkinai:deepchat:0.4.8
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cpe:2.3:a:thinkinai:deepchat:0.4.9
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cpe:2.3:a:thinkinai:deepchat:0.5.0
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cpe:2.3:a:thinkinai:deepchat:0.5.1