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    CVE-2026-93688

    SGLang through 0.5.19 in prefill/decode disaggregation mode with Mooncake KV transfer backend fails to validate bootstrap_room values, allowing unbounded transfer state allocation. Unauthenticated attackers can reach the decode engine's POST /generate endpoint and submit arbitrary bootstrap_room values to exhaust prefill process memory until out-of-memory termination.

    Published:Sep 18, 2026
    Last Modified:Sep 21, 2026
    EPS:Sep 18, 2026
    EPSS Score:0.00396
    CVSS Score:7.5

    Affected Products

    Vendor
    Lmsys
    Product
    Sglang
    Vendor
    Sgl-project
    Product
    Sglang

    Exploits

    No exploit reference

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    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