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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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:771d799655aaac806cf31364372771717adfbc7ab7d428ac1cf7bb14fffd48d9
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-80","description":"CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e46e474cae824800835dd94df09abe6a955210ba77d1480f6e2adbbf0b0ba459 · sha256:3d6f3b2a7fab9fad… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e46e474cae824800835dd94df09abe6a955210ba77d1480f6e2adbbf0b0ba459 · sha256:3d6f3b2a7fab9fad… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e46e474cae824800835dd94df09abe6a955210ba77d1480f6e2adbbf0b0ba459 · sha256:3d6f3b2a7fab9fad… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"deepchat","vendor":"ThinkInAIXYZ","versions":[{"status":"affected","version":"<= 0.5.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e46e474cae824800835dd94df09abe6a955210ba77d1480f6e2adbbf0b0ba459 · sha256:3d6f3b2a7fab9fad… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.7,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e46e474cae824800835dd94df09abe6a955210ba77d1480f6e2adbbf0b0ba459 · sha256:3d6f3b2a7fab9fad… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-80","description":"CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e46e474cae824800835dd94df09abe6a955210ba77d1480f6e2adbbf0b0ba459 · sha256:3d6f3b2a7fab9fad… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e46e474cae824800835dd94df09abe6a955210ba77d1480f6e2adbbf0b0ba459 · sha256:3d6f3b2a7fab9fad… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e46e474cae824800835dd94df09abe6a955210ba77d1480f6e2adbbf0b0ba459 · sha256:3d6f3b2a7fab9fad… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/ThinkInAIXYZ/deepchat/security/advisories/GHSA-h9f5-7hhf-fqm4","tags":["x_refsource_CONFIRM"],"url":"https://github.com/ThinkInAIXYZ/deepchat/security/advisories/GHSA-h9f5-7hhf-fqm4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e46e474cae824800835dd94df09abe6a955210ba77d1480f6e2adbbf0b0ba459 · sha256:3d6f3b2a7fab9fad… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/ThinkInAIXYZ/deepchat/security/advisories/GHSA-h9f5-7hhf-fqm4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e46e474cae824800835dd94df09abe6a955210ba77d1480f6e2adbbf0b0ba459 · sha256:3d6f3b2a7fab9fad… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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