Allocation of Resources Without Limits or Throttling in vLLM - CVE-2026-126396
Published: November 9, 2026 / Updated: November 13, 2026
Vulnerability identifier: #VU162983
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-126396
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an unauthenticated remote attacker to consume excessive host memory and CPU resources, potentially disrupting a vLLM service.
The vulnerability exists due to unchecked request-controlled min_pixels values and a skipped video-wide resource limit in MiniMax M3 video preprocessing when the default resize mode is used. An unauthenticated remote attacker can submit a video with an oversized min_pixels value to a deployment accepting request-level mm_processor_kwargs overrides, causing disproportionate frame enlargement and resource consumption before engine validation.
Affected software
vLLM
How to mitigate CVE-2026-126396
Install security update from vendor's website.
vLLM - update to 0.31.0