BIT-libpython-2021-3426

    Dashboard / Vulnerabilities / BIT-libpython-2021-3426

    BIT-libpython-2021-3426

    Published: 11 Aug 2025Last Modified: 8 Sept 2026

    Summary:

    Details: There's a flaw in Python 3's pydoc. A local or adjacent attacker who discovers or is able to convince another local or adjacent user to start a pydoc server could access the server and use it to disclose sensitive information belonging to the other user that they would not normally be able to access. The highest risk of this flaw is to data confidentiality. This flaw affects Python versions before 3.8.9, Python versions before 3.9.3 and Python versions before 3.10.0.

    References: https://bugzilla.redhat.com/show_bug.cgi?id=1935913, https://lists.debian.org/debian-lts-announce/2021/04/msg00005.html, https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/25HVHLBGO2KNPXJ3G426QEYSSCECJDU5/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BF2K7HEWADHN6P52R3QLIOX27U3DJ4HI/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DQYPUKLLBOZMKFPO7RD7CENTXHUUEUV7/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LM5V4VPLBHBEASSAROYPSHXGXGGPHNOE/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N6VXJZSZ6N64AILJX4CTMACYGQGHHD5C/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QNGAFMPIYIVJ47FCF2NK2PIX22HUG35B/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VPX7Y5GQDNB4FJTREWONGC4ZSVH7TGHF/, https://nvd.nist.gov/vuln/detail/CVE-2021-3426, https://security.gentoo.org/glsa/202104-04, https://security.netapp.com/advisory/ntap-20210629-0003/, https://www.oracle.com/security-alerts/cpujan2022.html, https://www.oracle.com/security-alerts/cpuoct2021.html, https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html

    Affected packages

    Package

    Name: libpython

    Purl: pkg:bitnami/libpython

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -2.7.18

    Affected versions

    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
    BIT-libpython-2021-3426 | CVE-DB