CVE-2026-84003

    Dashboard / Vulnerabilities / CVE-2026-84003

    CVE-2026-84003

    Published: 8 Sept 2026Last Modified: 18 Sept 2026

    Summary:

    Details: Authentication bypass by capture-replay in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorized attacker to perform spoofing over a network.

    References: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-84003

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -4f0241d6e3fcafeb3aac0a041b867aeae71fe749

    Affected versions

    msal-react-v5.5.5
    msal-react-v5.5.4
    msal-react-v5.5.3
    msal-react-v5.5.2
    msal-react-v5.5.1
    msal-react-v5.5.0

    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
    CVE-2026-84003 | CVE-DB