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    CVE-2023-51774

    The json-jwt (aka JSON::JWT) gem 1.16.3 for Ruby sometimes allows bypass of identity checks via a sign/encryption confusion attack. For example, JWE can sometimes be used to bypass JSON::JWT.decode.

    Published:Dec 25, 2023
    Last Modified:May 8, 2025
    EPS:Dec 25, 2023
    EPSS Score:0.00011
    CVSS Score:8.4

    Affected Products

    Vendor
    Json-jwt Project
    Product
    Json-jwt

    Exploits

    https://github.com/P3ngu1nW/CVE_Request/blob/main/novjson-jwt.mdhttps://github.com/P3ngu1nW/CVE_Request/blob/main/novjson-jwt.md

    Common Weakness Enumeration

    CWE-284 Improper Access Control

    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