CVE-2026-5497

CVE-2026-5497 affects vLLM 0.8.0 and later, where VideoMediaIO.load_base64() can perform unbounded frame processing for video/jpeg data URLs, leading to an Out-of-Memory DoS. An attacker can craft a single API request with thousands of comma-separated base64 JPEG frames, causing the server to dec...

GHSA-PQ5C-RJHQ-QP7P vLLM: Denial of Service via Unbounded Frame Count in video/jpeg Base64 Processing

Summary The VideoMediaIO.loadbase64 method at vllm/multimodal/media/video.py:51-62 splits video/jpeg data URLs by comma to extract individual JPEG frames, but does not enforce a frame count limit. The numframes parameter default: 32, which is enforced by the loadbytes code path at line 47-48, is...

PT-2026-30276

Name of the Vulnerable Software and Affected Versions vLLM versions 0.7.0 through 0.18.9 Description vLLM is an inference and serving engine for large language models LLMs. The VideoMediaIO.load base64 method at vllm/multimodal/media/video.py does not enforce a frame count limit when splitting...

Unbounded Frame Count in video/jpeg Base64 Data URL Processing Leads to OOM DoS

Summary The VideoMediaIO.loadbase64 method in vLLM's multimodal processing pipeline splits video/jpeg data URLs by comma delimiters to extract individual JPEG frames, but does not enforce a frame count limit. An attacker can craft a single API request containing thousands of comma-separated...