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EUVD-2026-329193

fkie_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.

GHSA-3ww4-5jv9-j5gm — vLLM's Artifact Pin Decay allows pinned deployments to load unpinned code, weights, and processors

Affected: PyPI: vllm

### Summary

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.

### Details

The expected invariant is:

> When a vLLM operator supplies a model or code revision pin, every code, config, processor, weight file, side weight, and same-repository subfolder artifact loaded as part of that model should resolve under that pin unless vLLM exposes and enforces a separate explicit pin for that artifact.

Current `main` was verified affected at commit `3795d7acf431980e62e738493f437ae2a51549da`.

Affected source boundaries:

- `vllm/model_executor/models/registry.py:1045-1051` and `:1058-1064` - `_try_resolve_transformers()` passes `revision=model_config.revision` and `trust_remote_code=model_config.trust_remote_code`, but omits `code_revision=model_config.code_revision` for external `auto_map` dynamic module imports. - `vllm/model_executor/model_loader/gguf_loader.py:58-60` - The direct-file GGUF form `repo/file.gguf` calls `hf_hub_download(repo_id=repo_id, filename=filename)` without pas…

PYSEC-2026-2301

Affected: PyPI: vllm

RHSA-2026:59138 — Red Hat Security Advisory: Red Hat AI Inference Server 3.3.6 (CUDA)

vllm: vLLM: Arbitrary code execution via malicious HuggingFace model vllm: vLLM: Supply-chain integrity issue due to inconsistent revision pinning controls vllm: vLLM: Information disclosure via integer truncation

WID-SEC-W-2026-1889 — vllm: Schwachstelle ermöglicht Manipulation von Daten

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in vllm ausnutzen, um Dateien zu manipulieren.