Bug 2546187 (CVE-2026-105758)

Summary: CVE-2026-105758 vllm: vllm: Denial of Service via unbounded video frame parameters
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, weaton
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in vllm. An unauthenticated remote attacker can cause a Denial of Service (DoS) by sending requests with excessively high video processing parameters to affected API endpoints. Because the backend does not enforce upper bounds on user-controlled video frame counts and rates, the service attempts to decode all frames from attacker-provided video data. This behavior consumes disproportionate server memory and can terminate the API process, making the service unavailable.
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Description OSIDB Bzimport 2026-10-05 23:01:43 UTC 
vLLM is an inference and serving engine for large language models. From 0.24.0 until 0.30.0, the Qwen2VLVideoBackend and Qwen3VLVideoBackend classes accept request-level values for the media_io_kwargs.video.max_frames and media_io_kwargs.video.fps fields without enforcing server-side ceilings. An unauthenticated caller can submit these values to the /tokenize endpoint, causing the sampler to decode every frame selected from attacker-controlled video input, consume disproportionate frontend memory, and potentially terminate the API process before scheduling or admission control. The Rust frontend is not affected because it rejects the media_io_kwargs field. This issue is fixed in version 0.30.0.