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    CVE-2026-41839

    A WebFlux application with a compromised subdomain (for example, compromised via cross-site scripting (XSS)) is vulnerable to an escalation attack exchanging a known session ID for that of an authenticated user. Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.

    Published:Jun 9, 2026
    Last Modified:Jun 9, 2026
    EPS:Jun 9, 2026
    EPSS Score:0.00027
    CVSS Score:4.2

    Affected Products

    Vendor
    Spring
    Product
    Spring Framework

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-384 Session Fixation

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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