CVE Feed

    Dashboard / CVE / CVE-2026-33204

    CVE-2026-33204

    SimpleJWT is a simple JSON web token library written in PHP. Prior to version 1.1.1, an unauthenticated attacker can perform a Denial of Service via JWE header tampering when PBES2 algorithms are used. Applications that call JWE::decrypt() on attacker-controlled JWEs using PBES2 algorithms are affected. This issue has been patched in version 1.1.1.

    Published:Mar 20, 2026
    Last Modified:Apr 10, 2026
    EPS:Mar 20, 2026
    EPSS Score:0.00057
    CVSS Score:7.5

    Affected Products

    Vendor
    Kelvin Mo
    Product
    Simplejwt
    Vendor
    Kelvinmo
    Product
    Simplejwt

    Exploits

    https://github.com/kelvinmo/simplejwt/security/advisories/GHSA-xw36-67f8-339x

    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