CRITICALVulnerability
Verified
Global

NVD CRITICAL: CVE-2026-54030 — LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prio...

·Source: NIST NVD

Updated:

Executive Summary

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.5, LibreChat's MCP OAuth implementation does not validate that the resource parameter from OAuth Protected Resource metadata (RFC 9728) matches the configured MCP server URL, allowing a malicious MCP server to steal access tokens intended for a legitimate server. This vulnerability is fixed in 0.8.5.

Analysis

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.5, LibreChat's MCP OAuth implementation does not validate that the resource parameter from OAuth Protected Resource metadata (RFC 9728) matches the configured MCP server URL, allowing a malicious MCP server to steal access tokens intended for a legitimate server. This vulnerability is fixed in 0.8.5. CVSS Score: 8. Published: 2026-06-25T17:16:40.660.

Indicators of Compromise (1)

CVE (1)
CVE-2026-54030
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Jun 25, 2026. Verified by: NIST.

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