Bug 2481450 (CVE-2026-9540)

Summary: CVE-2026-9540 vllm: vllm: Remote Denial of Service vulnerability in OpenAI-compatible Serving Path
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: alinfoot, bbrownin, dtrifiro, jkoehler, lphiri, rbryant, weaton
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in vllm-project vllm, specifically within its OpenAI-compatible Serving Path. A remote attacker could exploit this vulnerability by manipulating certain processing, leading to a denial of service (DoS). This could make the affected service unavailable to legitimate users. The issue impacts the availability of the vllm service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-05-26 14:01:55 UTC
A vulnerability was identified in vllm-project vllm 0.19.0. This issue affects some unknown processing of the component OpenAI-compatible Serving Path. Such manipulation leads to denial of service. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The pull request to fix this issue awaits acceptance.