{"id":"CVE-2025-66448","aliases":["GHSA-8fr4-5q9j-m8gm","PYSEC-2026-2015"],"url":"https://o3.security/vulnerability/CVE-2025-66448","summary":"vLLM vulnerable to remote code execution via transformers_utils/get_config","details":"vLLM is an inference and serving engine for large language models (LLMs). Prior to 0.11.1, vllm has a critical remote code execution vector in a config class named Nemotron_Nano_VL_Config. When vllm loads a model config that contains an auto_map entry, the config class resolves that mapping with get_class_from_dynamic_module(...) and immediately instantiates the returned class. This fetches and executes Python from the remote repository referenced in the auto_map string. Crucially, this happens even when the caller explicitly sets trust_remote_code=False in vllm.transformers_utils.config.get_config. In practice, an attacker can publish a benign-looking frontend repo whose config.json points via auto_map to a separate malicious backend repo; loading the frontend will silently run the backend’s code on the victim host. This vulnerability is fixed in 0.11.1.","published":"2025-12-01T22:45:42.566Z","modified":"2026-08-08T03:47:57.619929646Z","cvss":{"score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"vllm","fixedVersion":"0.11.1"}],"fix":{"url":"https://github.com/vllm-project/vllm/commit/ffb08379d8870a1a81ba82b72797f196838d0c86","label":"vllm-project/vllm@ffb0837"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66448.json"},{"type":"ADVISORY","url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-8fr4-5q9j-m8gm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66448"},{"type":"FIX","url":"https://github.com/vllm-project/vllm/commit/ffb08379d8870a1a81ba82b72797f196838d0c86"},{"type":"FIX","url":"https://github.com/vllm-project/vllm/pull/28126"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-08T03:47:57.619929646Z"}}