Reachable Assertion Affecting vllm package, versions [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.
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Test your applications- Snyk IDSNYK-PYTHON-VLLM-20044435
- published22 Sept 2026
- disclosed21 Sept 2026
- creditUnknown
Introduced: 21 Sep 2026
NewCVE-2026-94623 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
vllm is an A high-throughput and memory-efficient inference and serving engine for LLMs
Affected versions of this package are vulnerable to Reachable Assertion via an assertion failure in NixlBaseConnectorWorker._apply_prefix_caching, which fails to properly validate block counts across multi-prompt completion requests in prefill/decode disaggregated deployments. An attacker can submit completion requests with multiple prompts of varying lengths, triggering the assertion failure and causing the decode worker to terminate and become unavailable until restarted.