{"data":{"id":"e3c66468-bebc-4163-88ab-29d8da12ba80","title":"CVE-2026-54030: LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.5, LibreChat's MCP OAuth…","summary":"CVE-2026-54030 affects LibreChat before 0.8.5. Its MCP OAuth implementation does not check that the resource parameter from OAuth Protected Resource metadata (RFC 9728) matches the configured MCP server URL. A malicious MCP server can therefore steal access tokens meant for a legitimate server.","solution":"Fixed in 0.8.5.","labels":["security"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-54030","publishedAt":"2026-06-25T17:16:40.660Z","cveId":"CVE-2026-54030","cweIds":["CWE-346"],"cvssScore":"8","cvssSeverity":"high","severity":"high","attackType":["other"],"issueType":"vulnerability","affectedPackages":null,"affectedPackageNames":null,"affectedPackageRefs":null,"affectedVendors":[],"affectedVendorsRaw":["LibreChat"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":"LibreChat MCP OAuth token theft through unvalidated resource parameter","headlinePromptVersion":"h1","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N","attackVector":"network","attackComplexity":"high","privilegesRequired":"none","userInteraction":"required","exploitMaturity":"unknown","epssScore":0.00168,"epssCheckedAt":"2026-11-10T06:09:40.980Z","kevDateAdded":null,"advisoryAliases":null,"affectedPackagesSource":null,"affectedPackagesCheckedAt":"2026-11-10T00:11:43.951Z","patchAvailable":null,"disclosureDate":"2026-06-25T17:16:40.660Z","fixReleasedAt":null,"daysToFix":null,"fixCheckedAt":null,"capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":["confidentiality"],"aiComponentTargeted":"plugin","llmSpecific":true,"classifierConfidence":0.9,"researchCategory":null,"atlasIds":null,"fixes":[]}}