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CVE-2026-44222

vLLM: Remote DoS via Special-Token Placeholders PUBLISHED

Description (CNA)

vLLM is an inference and serving engine for large language models (LLMs). From 0.6.1 to before 0.20.0, there is a a Token Injection vulnerability in vLLM’s multimodal processing. Unauthenticated, text-only prompts that spell special tokens are interpreted as control. Image and video placeholder sequences supplied without matching data cause vLLM to index into empty grids during input-position computation, raising an unhandled IndexError and terminating the worker or degrading availability. Multimodal paths that rely on image_grid_thw/video_grid_thw are affected. This vulnerability is fixed in 0.20.0.

Affected (CNA)

Vendor / productVersions
vllm-project / vllmaffected >= 0.6.1, < 0.20.0

CWE

CWE-129

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.