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    CVE-2026-47857

    In Reactor Core, applications that use the Flux.windowTimeout operator with fairBackpressure enabled are vulnerable to a Denial of Service (DoS) condition. Reactor Core 3.8.0 - 3.8.6 Reactor Core 3.5.0 - 3.7.19 Reactor Core 3.4.41 and earlier

    Published:Aug 26, 2026
    Last Modified:Sep 4, 2026
    EPS:Aug 26, 2026
    EPSS Score:0.00222
    CVSS Score:5.9

    Affected Products

    Vendor
    Broadcom
    Product
    Reactor Core
    Vendor
    Spring
    Product
    Reactor Core

    Exploits

    No exploit reference

    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