{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54040", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-11T16:57:50.020Z", "datePublished": "2026-06-25T15:45:23.953Z", "dateUpdated": "2026-06-25T18:13:32.543Z"}, "containers": {"cna": {"title": "LibreChat: 2FA Backup Code Regeneration Without OTP Verification Allows 2FA Bypass", "problemTypes": [{"descriptions": [{"cweId": "CWE-306", "lang": "en", "description": "CWE-306: Missing Authentication for Critical Function", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/danny-avila/LibreChat/security/advisories/GHSA-h59w-x9h4-m6gv", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/danny-avila/LibreChat/security/advisories/GHSA-h59w-x9h4-m6gv"}], "affected": [{"vendor": "danny-avila", "product": "LibreChat", "versions": [{"version": "< 0.8.4-rc1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-25T15:45:23.953Z"}, "descriptions": [{"lang": "en", "value": "LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the POST /api/auth/2fa/backup/regenerate endpoint regenerates all 2FA backup codes without requiring any TOTP token or existing backup code verification. An attacker with a stolen session token can silently replace a victim's backup codes and use them to bypass 2FA login or disable 2FA entirely. This vulnerability is fixed in 0.8.4-rc1."}], "source": {"advisory": "GHSA-h59w-x9h4-m6gv", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/danny-avila/LibreChat/security/advisories/GHSA-h59w-x9h4-m6gv", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-25T18:12:54.587144Z", "id": "CVE-2026-54040", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-25T18:13:32.543Z"}}]}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.8.4-rc1)"}}], "enrichment": {"confidence": 98.0, "confidence_source": "matching", "scores": [{"score": 98.0, "source": "matching"}]}, "original": {"product": "LibreChat", "source": "cna", "vendor": "danny-avila"}, "product": "libre_chat", "vendor": "danny-avila"}], "created": "2026-06-25T18:00:07.573002+00:00", "updated": "2026-06-25T21:15:05.059744+00:00", "vendors": ["danny-avila", "danny-avila$PRODUCT$libre_chat"]}