CVE-2026-54036

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{"affected": [{"affectedData": [{"product": "LibreChat", "vendor": "danny-avila", "versions": [{"status": "affected", "version": "< 0.8.4-rc1"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:librechat:librechat:*:*:*:*:*:*:*:*", "matchCriteriaId": "77B80F25-E7C2-442E-98E3-F4462C40C74F", "versionEndIncluding": "0.8.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the GET /api/auth/2fa/enable endpoint can be called by an authenticated user (or attacker with a stolen session) even when 2FA is already fully enabled on the account. This endpoint overwrites the existing TOTP secret, generates new backup codes, and sets twoFactorEnabled to false \u2014 all without requiring any TOTP or backup code verification. An attacker with a valid session token can completely take over a victim's 2FA, locking the legitimate user out of their own two-factor authentication. This vulnerability is fixed in 0.8.4-rc1."}, {"lang": "es", "value": "LibreChat es un clon mejorado de ChatGPT que soporta m\u00faltiples proveedores de IA. Antes de la versi\u00f3n 0.8.4-rc1, el endpoint GET /api/auth/2fa/enable puede ser llamado por un usuario autenticado (o un atacante con una sesi\u00f3n robada) incluso cuando la 2FA ya est\u00e1 completamente habilitada en la cuenta. Este endpoint sobrescribe el secreto TOTP existente, genera nuevos c\u00f3digos de respaldo y establece twoFactorEnabled en falso - todo sin requerir ninguna verificaci\u00f3n de TOTP o c\u00f3digo de respaldo. Un atacante con un token de sesi\u00f3n v\u00e1lido puede tomar el control completo de la 2FA de una v\u00edctima, bloqueando al usuario leg\u00edtimo de su propia autenticaci\u00f3n de dos factores. Esta vulnerabilidad est\u00e1 corregida en la versi\u00f3n 0.8.4-rc1."}], "id": "CVE-2026-54036", "lastModified": "2026-10-25T22:10:00.150", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-54036", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-25T16:01:44.216251Z", "version": "2.0.3"}}]}, "published": "2026-06-25T16:16:39.217", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/danny-avila/LibreChat/security/advisories/GHSA-45fp-6q26-wfgq"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/danny-avila/LibreChat/security/advisories/GHSA-45fp-6q26-wfgq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-306"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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