EUVD-2026-41925
GHSA-33cg-gxv8-3p8g
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V16 - Security Logging and Error Handling Reachable assertion handling
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Alert meAnalysisAIv1 – Jul 06, 2026
Denial of service in vLLM 0.12.0 through 0.23.x lets any authorized API caller crash the entire inference server by submitting a pure prompt-embeddings payload to the /v1/completions endpoint when a model using M-RoPE (multimodal rotary position embedding) is loaded. The malformed request trips a reachable assertion in the EngineCore process, which terminates the whole server rather than rejecting the single request. There is no public exploit identified at time of analysis and it is not listed in CISA KEV; the flaw is fixed in vLLM 0.24.0.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in pypi
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Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
1DescriptionCVE.org
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.
Executive ViewAI
vLLM versions 0.12.0 through 0.23.x contain a denial-of-service vulnerability; no public exploit identified at time of analysis. Authenticated users can crash the entire AI inference server through the /v1/completions endpoint, disrupting ML/AI services dependent on these systems. Organizations running affected versions face potential service outages if internal users, contractors, or attackers obtain API credentials.
Within 24 hours: Audit all vLLM deployments to identify instances running versions 0.12.0-0.23.x and assess whether M-RoPE models are loaded. Within 7 days: Upgrade all affected vLLM instances to version 0.24.0 or later. Within 30 days: Complete validation testing of upgraded instances and review API access controls to limit exposure to trusted callers.
Vendor-released patch: vLLM 0.24.0
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
How this decision was reached
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What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
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