CVE-2025-66481
9.6 · CRITICALOverview
CVE-2025-66481 is a critical-severity vulnerability affecting thinkinai deepchat. It was published on December 9, 2025 and has a CVSS 3.1 base score of 9.6 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.6, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from thinkinai. Update deepchat to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| thinkinai | deepchat | 0 | Affected |
Frequently Asked Questions
What is CVE-2025-66481?
CVE-2025-66481 is a critical-severity vulnerability affecting thinkinai deepchat. It was published on December 9, 2025 and has a CVSS 3.1 base score of 9.6 (CRITICAL).
How severe is CVE-2025-66481?
This vulnerability has a CVSS 3.1 base score of 9.6, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2025-66481?
Check the references section for vendor advisories and patches from thinkinai. Update deepchat to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-66481?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-66481 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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