USN-5526-2

    Dashboard / Vulnerabilities / USN-5526-2

    USN-5526-2

    Published: 17 Aug 2022Last Modified: 10 Feb 2026

    Summary: pyjwt regression

    Details: USN-5526-1 fixed vulnerabilities in PyJWT. Unfortunately this caused a regression by incrementing the internal package version number on Ubuntu 22.04 LTS. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Aapo Oksman discovered that PyJWT incorrectly handled signatures constructed from SSH public keys. A remote attacker could use this to forge a JWT signature.

    References: https://ubuntu.com/security/notices/USN-5526-2, https://launchpad.net/bugs/1986487

    Affected packages

    Package

    Name: pyjwt

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=jammy

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.3.0-1ubuntu0.2

    Affected versions

    1.7.1-2ubuntu2

    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
    USN-5526-2 | CVE-DB