CVE-2025-62426

{"id": "CVE-2025-62426", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-62426", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2025-11-24T17:12:00.809982Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "vllm-project", "product": "vllm", "versions": [{"status": "affected", "version": ">= 0.5.5, < 0.11.1"}]}]}], "published": "2025-11-21T02:15:43.570", "references": [{"url": "https://github.com/vllm-project/vllm/blob/2a6dc67eb520ddb9c4138d8b35ed6fe6226997fb/vllm/entrypoints/chat_utils.py#L1602-L1610", "tags": ["Product"], "source": "security-advisories@github.com"}, {"url": "https://github.com/vllm-project/vllm/blob/2a6dc67eb520ddb9c4138d8b35ed6fe6226997fb/vllm/entrypoints/openai/serving_engine.py#L809-L814", "tags": ["Product"], "source": "security-advisories@github.com"}, {"url": "https://github.com/vllm-project/vllm/commit/3ada34f9cb4d1af763fdfa3b481862a93eb6bd2b", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/vllm-project/vllm/pull/27205", "tags": ["Issue Tracking"], "source": "security-advisories@github.com"}, {"url": "https://github.com/vllm-project/vllm/security/advisories/GHSA-69j4-grxj-j64p", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-770"}]}], "descriptions": [{"lang": "en", "value": "vLLM is an inference and serving engine for large language models (LLMs). From version 0.5.5 to before 0.11.1, the /v1/chat/completions and /tokenize endpoints allow a chat_template_kwargs request parameter that is used in the code before it is properly validated against the chat template. With the right chat_template_kwargs parameters, it is possible to block processing of the API server for long periods of time, delaying all other requests. This issue has been patched in version 0.11.1."}, {"lang": "es", "value": "vLLM es un motor de inferencia y servicio para modelos de lenguaje grandes (LLMs). Desde la versi\u00f3n 0.5.5 hasta antes de la 0.11.1, los endpoints /v1/chat/completions y /tokenize permiten un par\u00e1metro de solicitud chat_template_kwargs que se utiliza en el c\u00f3digo antes de que sea validado correctamente contra la plantilla de chat. Con los par\u00e1metros chat_template_kwargs correctos, es posible bloquear el procesamiento del servidor API durante largos per\u00edodos de tiempo, retrasando todas las dem\u00e1s solicitudes. Este problema ha sido parcheado en la versi\u00f3n 0.11.1."}], "lastModified": "2026-10-19T13:10:00.110", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BA1047E1-ED1E-4685-B699-8CE5B2058D87", "versionEndExcluding": "0.11.1", "versionStartIncluding": "0.5.5"}, {"criteria": "cpe:2.3:a:vllm:vllm:0.11.1:rc0:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FEE054E1-1F84-4ACC-894C-D7E3652EF1B1"}, {"criteria": "cpe:2.3:a:vllm:vllm:0.11.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B05850DF-38FE-439F-9F7A-AA96DA9038CC"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}