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.
Advisories
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Fixes
Solution
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Workaround
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References
History
Fri, 26 Jun 2026 02:30:00 +0000
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ssvc
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Thu, 25 Jun 2026 21:30:00 +0000
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Danny-avila
Danny-avila libre Chat |
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| Vendors & Products |
Danny-avila
Danny-avila libre Chat |
Thu, 25 Jun 2026 16:45:00 +0000
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| Description | 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. | |
| Title | LibreChat: Missing Resource Parameter Validation in MCP OAuth Flow | |
| Weaknesses | CWE-346 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-26T02:04:54.939Z
Reserved: 2026-06-11T16:57:50.018Z
Link: CVE-2026-54030
Updated: 2026-06-26T02:04:48.924Z
No data.
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OpenCVE Enrichment
Updated: 2026-06-25T21:15:05Z
Weaknesses