CVE-2026-114051: vllm 0 to before 0.31.0

Affected technology

vllm · 0 to before 0.31.0
vllm-project

Description’s affected range: before 0.31.0 skips the min_tokens <= max_tokens check for /inference/v1/generate requests with a null max_tokens

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

Unauthenticated remote attackers can send one request with an oversized min_tokens to hang all subsequent generation requests until manual restart. Vendor/CNA’s CVSS 4.0 assessment (base score 7.1/10) rates confidentiality and integrity impact as none; availability impact as high.