CVE-2025-66481

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Source
https://cve.org/CVERecord?id=CVE-2025-66481
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66481.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-66481
Aliases
  • GHSA-h9f5-7hhf-fqm4
Published
2025-12-09T00:25:08.301Z
Modified
2026-03-14T12:44:35.632534Z
Severity
  • 9.6 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H CVSS Calculator
Summary
DeepChat's Incomplete XSS Fix Allows RCE through Mermaid Content
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66481.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-79",
        "CWE-80",
        "CWE-94"
    ]
}
References

Affected packages

Git / github.com/thinkinaixyz/deepchat

Affected ranges

Type
GIT
Repo
https://github.com/thinkinaixyz/deepchat
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
b18029b23487bee67bedc1bee7edd978afcdb112
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.5.1"
        }
    ]
}

Affected versions

v0.*
v0.0.1
v0.0.10
v0.0.11
v0.0.12
v0.0.13
v0.0.14
v0.0.15
v0.0.16
v0.0.2
v0.0.3
v0.0.5
v0.0.6
v0.0.7
v0.0.9
v0.1.0
v0.1.1
v0.2.0
v0.2.0-1
v0.2.1
v0.2.2
v0.2.3
v0.2.3-1
v0.2.4
v0.2.5
v0.2.6
v0.2.7
v0.2.8
v0.2.9
v0.3.0
v0.3.1
v0.3.2
v0.3.3
v0.3.4
v0.3.5
v0.3.6
v0.3.7
v0.3.9
v0.4.0
v0.4.1
v0.4.2
v0.4.3
v0.4.5
v0.4.6
v0.4.8
v0.4.9
v0.5.0
v0.5.1
Other
workflow-19022687016

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66481.json"