{"id":"CVE-2026-47155","aliases":["GHSA-3ww4-5jv9-j5gm","PYSEC-2026-2301"],"url":"https://o3.security/vulnerability/CVE-2026-47155","summary":"vLLM: Artifact Pin Decay in vLLM allows pinned deployments to load unpinned code, weights, and processors","details":"vLLM is an inference and serving engine for large language models (LLMs). Prior to 0.22.0, vLLM's revision pinning controls do not consistently apply to all artifacts loaded for a model. A deployment that supplies --revision or --code-revision can still load dynamic code, GGUF files, image processors, retrieval side weights, or same-repository subfolder weights/config from an unpinned/default revision. This is a supply-chain integrity issue for pinned vLLM deployments. Operators can believe they are serving a reviewed model revision while vLLM resolves behavior-affecting nested or sibling artifacts outside that reviewed revision. This vulnerability is fixed in 0.22.0.","published":"2026-06-22T22:20:10.793Z","modified":"2026-08-24T18:49:05.769530747Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N"},"epss":{"score":0.00249,"percentile":0.1619,"asOf":"2026-09-07"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"vllm","fixedVersion":"0.22.0"}],"fix":{"url":"https://github.com/vllm-project/vllm/commit/d26a28ab033697f55a1414b5b0435de7cd6045b6","label":"vllm-project/vllm@d26a28a"},"references":[{"type":"WEB","url":"https://huntr.com/bounties/3f1e24c0-87d2-4f6c-a705-820f380879ac"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47155.json"},{"type":"ADVISORY","url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-3ww4-5jv9-j5gm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47155"},{"type":"FIX","url":"https://github.com/vllm-project/vllm/commit/d26a28ab033697f55a1414b5b0435de7cd6045b6"},{"type":"FIX","url":"https://github.com/vllm-project/vllm/pull/42616"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-24T18:49:05.769530747Z"}}