CVE-2026-55514

MediumCVSS 6.5/10Last modified Oct 25, 2026

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-617

Affected software

Vendor	Product	Versions
vllm-project	vllm	>= 0.12.0, < 0.24.0

References

https://github.com/vllm-project/vllm/commit/470229c37efaf69c86e8bc97482b0b1ff7551c65Patch
https://github.com/vllm-project/vllm/pull/45252Issue Tracking, Patch
https://github.com/vllm-project/vllm/releases/tag/v0.24.0Release Notes
https://github.com/vllm-project/vllm/security/advisories/GHSA-33cg-gxv8-3p8gVendor Advisory

Timeline

Published: Jul 6, 2026
Last modified: Oct 25, 2026
NVD status: Analyzed

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