CVE-2026-121546

    Dashboard / Vulnerabilities / CVE-2026-121546

    CVE-2026-121546

    Published: 3 Nov 2026Last Modified: 5 Nov 2026

    Summary: ruTorrent before 5.3.20 Path Traversal via datadir Plugin Symlink Following

    Details: ruTorrent before 5.3.20 contains a path traversal vulnerability in the datadir plugin that allows authenticated users to escape the topDirectory jail because correctDirectory() does not resolve symbolic links. Attackers can submit a datadir path through a symlink under their top directory to create directories and move torrent data to locations writable by the web server or rtorrent.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/121xxx/CVE-2026-121546.json, https://nvd.nist.gov/vuln/detail/CVE-2026-121546, https://www.vulncheck.com/advisories/rutorrent-before-5.3.20-path-traversal-via-datadir-plugin-symlink-following, https://github.com/Novik/ruTorrent/issues/3474, https://github.com/Novik/ruTorrent/commit/2059ff12464b2ce14fd0f53df8d6b19fb6b8a5eb, https://github.com/Novik/ruTorrent, https://github.com/Novik/ruTorrent/blob/v5.3.19/php/settings.php#L526-L541, https://github.com/Novik/ruTorrent/blob/v5.3.19/plugins/datadir/action.php#L60

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -b2ef0a6257e2cdb1de5d89f42453b0d08ab1f3d1

    Affected versions

    v5.3.19
    v5.3.18
    v5.3.17
    v5.3.16
    v5.3.15
    v5.3.14
    v5.3.13
    v5.3.12
    v5.3.11
    v5.3.10
    v5.3.9
    v5.3.8
    v5.3.7
    v5.3.6
    v5.3.5
    v5.3.3
    v5.3.4
    v5.3.2
    v5.3.1
    v5.3.0

    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
    CVE-2026-121546 | CVE-DB