Medium [CVE-2026-47155] Supply-chain integrity issue due to inconsistent revision pinning controls
This medium-severity Red Hat Linux advisory covers CVE-2026-47155 affecting Red Hat AI Inference Server 3.3, Red Hat Enterprise Linux AI 3.3, Red Hat Enterprise Linux AI (RHEL AI) 3.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
Summary
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.
This issue can lead to a supply-chain integrity compromise, where operators may unknowingly serve models with unreviewed or unintended behavior. Red Hat rates this issue as having Moderate impact.
The flaw is a supply-chain integrity issue when operators pin a HuggingFace model revision but vLLM may still load nested artifacts from an unpinned revision. It affects Red Hat AI Inference Server, Red Hat OpenShift AI, and Red Hat Enterprise Linux AI images that ship vLLM versions prior to 0.22.0.
KServe control-plane components that bundle vLLM as a library are not affected. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N).
Weakness: CWE-829.
Is CVE-2026-47155 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-47155 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2026-47155?
Upgrade to a fixed release named by Red Hat:
- 0.22.0
- rhaiis/vllm-cuda-rhel9:1787161382
- rhaiis/vllm-rocm-rhel9:1787161803
- rhaiis/vllm-spyre-rhel9:1787161776
- rhelai3/disk-image-cuda-rhel9:1788290314
- rhelai3/bootc-aws-cuda-rhel9:1788273908
- rhelai3/bootc-azure-cuda-rhel9:1788273909
- rhelai3/bootc-azure-rocm-rhel9:1788273908
- rhelai3/bootc-cuda-rhel9:1788260684
- rhelai3/bootc-gcp-cuda-rhel9:1788273977
- rhelai3/bootc-rocm-rhel9:1788260620
- RHSA-2026:59138
4 more fixed releases are listed below.
Confirm against the vendor advisory before you patch.
- < 0.22.0
Official advisory · high-confidence parse· fetched 14 days ago·verify at source
- 0.22.0
- rhaiis/vllm-cuda-rhel9:1787161382
- rhaiis/vllm-rocm-rhel9:1787161803
- rhaiis/vllm-spyre-rhel9:1787161776
- rhelai3/disk-image-cuda-rhel9:1788290314
- rhelai3/bootc-aws-cuda-rhel9:1788273908
- rhelai3/bootc-azure-cuda-rhel9:1788273909
- rhelai3/bootc-azure-rocm-rhel9:1788273908
- rhelai3/bootc-cuda-rhel9:1788260684
- rhelai3/bootc-gcp-cuda-rhel9:1788273977
- rhelai3/bootc-rocm-rhel9:1788260620
- RHSA-2026:59138
- RHSA-2026:59139
- RHSA-2026:60363
- RHSA-2026:62335
- RHSA-2026:62336
Official advisory · high-confidence parse· fetched 14 days ago·verify at source
Mitigation checklist
- Upgrade to a vLLM build containing the fix (>= 0.22.0) when available from Red Hat. Until then, only serve models from trusted registries, pin revisions explicitly, and review nested artifacts in model repositories before deployment.
Official advisory · high-confidence parse· fetched 14 days ago·verify at source
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