CVE-2026-31942

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{"affected": [{"affectedData": [{"product": "LibreChat", "vendor": "danny-avila", "versions": [{"status": "affected", "version": "< 0.8.3-rc1"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:librechat:librechat:*:*:*:*:*:*:*:*", "matchCriteriaId": "2D34833A-E49E-47F0-8C2E-0D55B6CF59BB", "versionEndExcluding": "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. In versions up to and including 0.7.6, an Insecure Direct Object Reference (IDOR) vulnerability exists in the API keys management endpoint (PUT /api/keys). Due to the use of the JavaScript object spread operator after setting the authenticated user's ID, any authenticated user can inject a userId parameter in the request body to overwrite any other user's API keys (e.g., OpenAI, Anthropic, Azure). This allows an attacker to replace a victim's API key configuration, potentially routing the victim's conversations through attacker-controlled keys or denying service by providing invalid keys. This is patched in version 0.8.3-rc1."}, {"lang": "es", "value": "LibreChat es un clon mejorado de ChatGPT que soporta m\u00faltiples proveedores de IA. En versiones hasta la 0.7.6 inclusive, existe una vulnerabilidad de Referencia Directa Insegura a Objeto (IDOR) en el endpoint de gesti\u00f3n de claves API (PUT /api/keys). Debido al uso del operador de propagaci\u00f3n de objetos de JavaScript despu\u00e9s de establecer el ID del usuario autenticado, cualquier usuario autenticado puede inyectar un par\u00e1metro userId en el cuerpo de la solicitud para sobrescribir las claves API de cualquier otro usuario (p. ej., OpenAI, Anthropic, Azure). Esto permite a un atacante reemplazar la configuraci\u00f3n de claves API de una v\u00edctima, potencialmente enrutando las conversaciones de la v\u00edctima a trav\u00e9s de claves controladas por el atacante o denegando el servicio al proporcionar claves no v\u00e1lidas. Esto est\u00e1 parcheado en la versi\u00f3n 0.8.3-rc1."}], "id": "CVE-2026-31942", "lastModified": "2026-07-22T19:10:00.120", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.1, "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:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-31942", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-03T13:12:30.360689Z", "version": "2.0.3"}}]}, "published": "2026-06-02T23:16:35.687", "references": [{"source": "security-advisories@github.com", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://github.com/danny-avila/LibreChat/security/advisories/GHSA-5jcj-rh68-cgj7"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.8.3-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": "2026-06-03T03:45:23.483220+00:00", "updated": "2026-06-03T04:00:13.032743+00:00", "vendors": ["danny-avila", "danny-avila$PRODUCT$libre_chat"]}