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TI-2025-40705 Aliases CVE-2025-66201

LibreChat is Vulnerable to Server-Side Request Forgery (SSRF) in Actions Capability

Priority HIGH 72CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

LibreChat is a ChatGPT clone with additional features. Prior to version 0.8.1-rc2, LibreChat is vulnerable to Server-side Request Forgery (SSRF), by passing specially crafted OpenAPI specs to its "Actions" feature and making the LLM use those actions. It could be used by an authenticated user with access to this feature to access URLs only accessible to the LibreChat server (such as cloud metadata services, through which impersonation of the server might be possible). This issue has been patched in version 0.8.1-rc2.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00313 24th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed LibreChat (danny-avila): 0.8.1-rc2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
danny-avilaLibreChatbefore 0.8.1-rc20.8.1-rc2Patch availableCNA
  • LibreChat Vendordanny-avila Affected before 0.8.1-rc2 Fixed in 0.8.1-rc2 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:librechat:librechat:*:*:*:*:*:*:*:*before 0.8.1Vulnerabledanny-avila
cpe:2.3:a:librechat:librechat:0.8.1:-:*:*:*:*:*:*0.8.1Vulnerabledanny-avila
cpe:2.3:a:librechat:librechat:0.8.1:rc1:*:*:*:*:*:*0.8.1 rc1Vulnerabledanny-avila
  • cpe:2.3:a:librechat:librechat:*:*:*:*:*:*:*:* Versions before 0.8.1 Vulnerable ·danny-avila
  • cpe:2.3:a:librechat:librechat:0.8.1:-:*:*:*:*:*:* Versions 0.8.1 Vulnerable ·danny-avila
  • cpe:2.3:a:librechat:librechat:0.8.1:rc1:*:*:*:*:*:* Versions 0.8.1 rc1 Vulnerable ·danny-avila

Remediation

  • Fix · CNA LibreChat (danny-avila) Fixed in 0.8.1-rc2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-66201

References

Exploit 1

  • TI-2026-25134 LibreChat Exfiltrates Server Secrets via MCP Server URL Injection CVSS 3.1CRITICAL 9.6
  • TI-2026-17862 LibreChat MCP Stdio Remote Command Execution CVSS 3.1CRITICAL 9.9
  • TI-2026-38976 LibreChat: Missing Resource Parameter Validation in MCP OAuth Flow CVSS 3.1CRITICAL 9.3
  • TI-2024-27763 LibreChat through 0.7.4-rc1 has incorrect access control for message updates. CVSS 3.1CRITICAL 9.8
  • TI-2024-10347 Path Traversal in danny-avila/librechat CVSS 3.0HIGH 8.8
  • TI-2026-25682 In LibreChat 0.8.1-rc2, a logged-in user obtains a JWT for both the LibreChat API and the RAG API. CVSS 3.1CRITICAL 9.0
See all 50 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences