fast-jwt@2.0.0 vulnerabilities

Fast JSON Web Token implementation

  • latest version

    5.0.2

  • latest non vulnerable version

  • first published

    4 years ago

  • latest version published

    23 hours ago

  • licenses detected

  • Direct Vulnerabilities

    Known vulnerabilities in the fast-jwt package. This does not include vulnerabilities belonging to this package’s dependencies.

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    VulnerabilityVulnerable Version
    • M
    Improper Input Validation

    fast-jwt is a Fast JSON Web Token implementation

    Affected versions of this package are vulnerable to Improper Input Validation due to improperly prevention of JWT algorithm confusion for all public key types. To exploit this vulnerability, an attacker needs to craft a malicious JWT token containing the HS256 algorithm, signed with the public RSA key of the victim application.

    Note: This attack will only work if the victim application utilizes a public key containing the BEGIN RSA PUBLIC KEY header.

    How to fix Improper Input Validation?

    Upgrade fast-jwt to version 3.3.2 or higher.

    <3.3.2