Allocation of Resources Without Limits or Throttling Affecting vllm package, versions [,0.29.0)
Threat Intelligence
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Allocation of Resources Without Limits or Throttling vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-PYTHON-VLLM-20158371
- published27 Sept 2026
- disclosed26 Sept 2026
- creditUnknown
Introduced: 26 Sep 2026
NewCVE-2026-100647 (opens in a new tab)How to fix?
Upgrade vllm to version 0.29.0 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 cache_salt field across multiple API protocol handlers (Anthropic, OpenAI chat completion, OpenAI completion, OpenAI responses, pooling, and scale-out endpoints), which accepts an unbounded-length string. An unauthenticated remote attacker can submit a request with an arbitrarily large cache_salt value, causing excessive CPU consumption in the scheduler during block hashing and prefix cache operations, resulting in a crash.