Allocation of Resources Without Limits or Throttling Affecting vllm package, versions [0.19.0, 0.26.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-PYTHON-VLLM-18857107
- published16 Aug 2026
- disclosed13 Aug 2026
- creditRex Liu
Introduced: 13 Aug 2026
NewCVE-2026-73559 (opens in a new tab)How to fix?
Upgrade vllm to version 0.26.0 or higher.
Overview
vllm is an A high-throughput and memory-efficient inference and serving engine for LLMs
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the prompt field in the /v1/completions API endpoint, which accepts an unbounded list and causes the system to create a separate engine generator and response slot for each prompt. An attacker can exhaust CPU, memory, async scheduling capacity, engine request slots, and response buffering by submitting a single crafted request.