PYSEC-2026-783

    Dashboard / Vulnerabilities / PYSEC-2026-783

    PYSEC-2026-783

    Published: 6 Jul 2026Last Modified: 7 Jul 2026

    Summary: aptdaemon Information Disclosure via Improper Input Validation in Transaction class

    Details: There is no input validation on the Locale property in an apt transaction. An unprivileged user can supply a full path to a writable directory, which lets aptd read a file as root. Having a symlink in place results in an error message if the file exists, and no error otherwise. This way an unprivileged user can check for the existence of any files on the system as root.

    References: https://nvd.nist.gov/vuln/detail/CVE-2020-15703, https://bugs.launchpad.net/ubuntu/+source/aptdaemon/+bug/1888235, https://github.com/linuxmint/aptdaemon, https://github.com/linuxmint/aptdaemon/blob/4d24cb61575ac6fbee8d5e61ef933e6093ee0a2e/debian/patches/CVE-2020-15703.patch, https://ubuntu.com/security/notices/USN-4537-1, https://www.eyecontrol.nl/blog/the-story-of-3-cves-in-ubuntu-desktop.html, https://pypi.org/project/aptdaemon, https://github.com/advisories/GHSA-wpmr-q825-x4c6

    Affected packages

    Package

    Name: aptdaemon

    Purl: pkg:pypi/aptdaemon

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.1.1

    Affected versions

    0.3X

    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
    PYSEC-2026-783 | CVE-DB