Reachable Assertion Affecting vllm package, versions [,0.22.0)
Threat Intelligence
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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-17353931
- published17 Jun 2026
- disclosed16 Jun 2026
- creditPierre-Olivier Bonin, Ph.D.
Introduced: 16 Jun 2026
NewCVE-2026-41523 (opens in a new tab)How to fix?
Upgrade vllm to version 0.22.0 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 Reachable Assertion via the resolve_obj_by_qualname function. An attacker can execute arbitrary code by publishing a malicious model with a crafted configuration file and convincing a victim to load it while the application is running in Python optimized mode.
Note: This is only exploitable if the application is executed with Python optimization enabled (such as using the -O flag or setting PYTHONOPTIMIZE=1).