SOURCE-LINKED INTELLIGENCE

GHSA-mgrm-fgjv-mhv8: vLLM denial of service via outlines unbounded cache on disk

OSV AI package advisories · observation · Mar 19, 2025 · UTC

### Impact The [outlines](https://dottxt-ai.github.io/outlines/latest/) library is one of the backends used by vLLM to support structured output (a.k.a. guided decoding). Outlines provides an optional cache for its compiled grammars on the local filesystem. This cache has been on by default in vLLM. Outlines is also available by default through the OpenAI compatible API server. The affected code in vLLM is [vllm/model_executor/guided_decoding/outlines_logits_processors.py](https://github.com/vllm-project/vllm/blob/53be4a863486d02bd96a59c674bbec23eec508f6/vllm/model_executor/guided_decoding/out

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recordType: vulnerability
status: active
evidenceStatus: reported
region: Global

Evidence & attribution

OSV AI package advisories · 2025-03-19T15:52:26.000Z

First collected: 2026-09-20T22:31:48.298Z. This is not the publication date.