Allocation of Resources Without Limits or Throttling in vLLM - CVE-2026-100649
Published: October 6, 2026
Vulnerability identifier: #VU153329
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-100649
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper resource-limit enforcement in the PyNvVideoCodec decoder-pool state when handling video requests that select different sampler subclasses. A remote attacker can select multiple stock sampler subclasses in video requests to cause a denial of service.
Exploitation requires the PyNvVideoCodec backend to be configured and multiple request-selectable sampler subclasses to reach that backend.
Affected software
vLLM
How to mitigate CVE-2026-100649
Install security update from vendor's website.
vLLM - update to 0.29.0