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    CVE-2026-114051

    vLLM before 0.31.0 skips the min_tokens <= max_tokens check for /inference/v1/generate requests with a null max_tokens, so the EngineCore input thread later dies on an uncaught VLLMValidationError while /health still returns 200. Unauthenticated remote attackers can send one request with an oversized min_tokens to hang all subsequent generation requests until manual restart.

    Published:Oct 21, 2026
    Last Modified:Oct 28, 2026
    EPS:Oct 21, 2026
    EPSS Score:0.00375
    CVSS Score:7.5

    Affected Products

    Vendor
    Vllm
    Product
    Vllm
    Vendor
    Vllm-project
    Product
    Vllm

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-248 Uncaught Exception

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-115916 (CVSS 6.5) — vLLM is an inference and serving engine for large language models. Prior to 0.32.0, vllm/tokenizers/hf.py comp…
    CVE-2026-115915 (CVSS 8.1) — vLLM is an inference and serving engine for large language models. Prior to 0.32.0, ImageMediaIO passes attack…
    CVE-2026-115914 (CVSS 6.5) — vLLM is an inference and serving engine for large language models. From 0.11.1 until 0.32.0, the DeepSeek-OCR,…
    CVE-2026-115913 (CVSS 6.5) — vLLM is an inference and serving engine for large language models. Prior to 0.32.0, the Phi-4 multimodal audio…
    CVE-2026-115912 (CVSS 7.5) — vLLM is an inference and serving engine for large language models. Prior to 0.32.0, an authenticated caller ca…
    CVE-2026-115911 (CVSS 6.5) — vLLM is an inference and serving engine for large language models. From 0.19.0 until 0.32.0, authenticated cal…
    CVE-2026-116180 (CVSS 8.3) — vLLM from 0.8.5 before 0.31.0 has a denial of service flaw. LogprobsTensors.empty_cpu() in vllm/v1/outputs.py …
    CVE-2026-116181 (CVSS 7.1) — vLLM from 0.20.1 before 0.29.0 contains an improper input validation vulnerability that allows remote attacker…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High