PT-2026-99320 · Vllm · Vllm

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CVE-2026-100649

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Published

2026-09-26

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Updated

2026-09-28

CVSS v4.0

6.3

Medium

VectorAV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Name of the Vulnerable Software and Affected Versions vLLM versions prior to 0.29.0
Description A resource-limit bypass exists in the PyNvVideoCodec decoder allocation. This issue occurs because sampler subclass shadowing allows independent counter increments. Unauthenticated attackers can select different sampler subclasses in video requests to exceed configured decoder limits, leading to the exhaustion of unaccounted GPU memory.
Recommendations Update vLLM to version 0.29.0 or later.

Exploit

Fix

Allocation of Resources Without Limits

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Weakness Enumeration

Related Identifiers

CVE-2026-100649
GHSA-J682-9XP5-RRF3

Affected Products

Vllm