Vulnerability in Vllm
CVE-2026-47155
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 · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N.
EPSS exploit prediction
EPSS: 0.002 (14.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 14.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Vllm
- Vllm-Project Vllm — versions < 0.22.0
Weakness classification (CWE)
References
- github.com/vllm-project/vllm/security/advisories/GHSA-3ww4-5jv9-j5gm (Third Party Advisory)
- github.com/vllm-project/vllm/pull/42616 (Issue Tracking)
- github.com/vllm-project/vllm/commit/d26a28ab033697f55a1414b5b0435de7cd6045b6 (Patch)
- huntr.com/bounties/3f1e24c0-87d2-4f6c-a705-820f380879ac (Third Party Advisory)
Frequently asked questions
- What is CVE-2026-47155?
- CVE-2026-47155 is a medium-severity vulnerability in Vllm, classified under Insufficient Verification of Data Authenticity. CVSS score: 6.5/10. Published 2026-06-22.
- How severe is CVE-2026-47155?
- Medium severity. CVSS v3 base score is 6.5 out of 10.