{"id":"CVE-2026-47155","state":"PUBLISHED","title":"vLLM: Artifact Pin Decay in vLLM allows pinned deployments to load unpinned code, weights, and processors","description":"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.","publishedAt":"2026-06-22T22:20:10.793Z","updatedAt":"2026-06-23T12:35:39.739Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["vllm-project vllm"],"affected":[{"vendor":"vllm-project","product":"vllm","versions":[{"version":"< 0.22.0","status":"affected"}]}],"references":["https://github.com/vllm-project/vllm/security/advisories/GHSA-3ww4-5jv9-j5gm","https://github.com/vllm-project/vllm/pull/42616","https://github.com/vllm-project/vllm/commit/d26a28ab033697f55a1414b5b0435de7cd6045b6","https://huntr.com/bounties/3f1e24c0-87d2-4f6c-a705-820f380879ac"],"weaknesses":["CWE-345"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/47xxx/CVE-2026-47155.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-47155","state":"PUBLISHED","datePublished":"2026-06-22T22:20:10.793Z","dateUpdated":"2026-06-23T12:35:39.739Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-18T21:25:34.496Z"},"containers":{"cna":{"title":"vLLM: Artifact Pin Decay in vLLM allows pinned deployments to load unpinned code, weights, and processors","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"vllm-project","product":"vllm","versions":[{"version":"< 0.22.0","status":"affected"}]}],"references":[{"url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-3ww4-5jv9-j5gm","name":"https://github.com/vllm-project/vllm/security/advisories/GHSA-3ww4-5jv9-j5gm","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/vllm-project/vllm/pull/42616","name":"https://github.com/vllm-project/vllm/pull/42616","tags":["x_refsource_MISC"]},{"url":"https://github.com/vllm-project/vllm/commit/d26a28ab033697f55a1414b5b0435de7cd6045b6","name":"https://github.com/vllm-project/vllm/commit/d26a28ab033697f55a1414b5b0435de7cd6045b6","tags":["x_refsource_MISC"]},{"url":"https://huntr.com/bounties/3f1e24c0-87d2-4f6c-a705-820f380879ac","name":"https://huntr.com/bounties/3f1e24c0-87d2-4f6c-a705-820f380879ac","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-345","lang":"en","description":"CWE-345: Insufficient Verification of Data Authenticity","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-22T22:20:10.793Z"},"source":{"advisory":"GHSA-3ww4-5jv9-j5gm","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-23T12:34:39.566846Z","id":"CVE-2026-47155","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-23T12:35:39.739Z"}}]}}}