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CVE-2026-55514

6.5 · MEDIUM

vLLM is a library for LLM inference and serving.

Published Jul 6, 2026CWE-617EPSS 0.66%

Overview

CVE-2026-55514 is a medium-severity vulnerability. It was published on July 6, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

vLLM is a library for LLM inference and serving. From 0.12.0 to before 0.24.0, sending a pure prompt embeds payload in a /v1/completions request with a model using M-RoPE causes EngineCore to fail an assertion and fatally crash, shutting down the entire server application. Any remote user who is authorized to make a /v1/completions request can make such a request and induce a crash. This issue is fixed in version 0.24.0.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/vllm-project/vllm/commit/470229c37efaf69c86e8bc97482b0b1ff7551c65GitHubgithub.com/vllm-project/vllm/pull/45252GitHubgithub.com/vllm-project/vllm/releases/tag/v0.24.0GitHubgithub.com/vllm-project/vllm/security/advisories/GHSA-33cg-gxv8-3p8g

How CyberStrike helps

Frequently asked questions

What is CVE-2026-55514?

CVE-2026-55514 is a medium-severity vulnerability. It was published on July 6, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-55514?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-55514?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-55514?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-55514 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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