CVE-2026-121546

ruTorrent before 5.3.20 Path Traversal via datadir Plugin Symlink Following

6.0 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: Low

Exploit likelihood

0.40%Unchanged since Nov 4, 2026

What each source reports

CVE List Score used 6.0

ruTorrent before 5.3.20 Path Traversal via datadir Plugin Symlink Following

Record: CVE-2026-121546
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
Weakness: CWE-59
Updated: 2026-11-03

EUVDEUVD-2026-115891 6.0

Record: EUVD-2026-115891
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-rh8c-6348-v25w 6.0

ruTorrent before 5.3.20 contains a path traversal vulnerability in the datadir plugin that allows...

Record: GHSA-rh8c-6348-v25w
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
Weakness: CWE-59
Updated: 2026-11-03

NVD 6.0

Record: CVE-2026-121546
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
Weakness: CWE-59
Updated: 2026-11-03

OSV 6.0

ruTorrent before 5.3.20 Path Traversal via datadir Plugin Symlink Following

Record: CVE-2026-121546
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
Weakness: CWE-59
Updated: 2026-11-05

Affected products

novik rutorrent

History

History
Recorded	Changed	Sources
Nov 5, 2026	references	OSV
Nov 3, 2026	published	EUVD
Nov 3, 2026	published	EUVD
Nov 3, 2026	aliases, references	GitHub Advisories, NVD
Nov 3, 2026	cwes, facts, references, severity, title	CVE List
Nov 3, 2026	first indexed	EUVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-121546 is a medium vulnerability (CVSS 6.0) in Novik Rutorrent, published November 3, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.40%, the 34th percentile. No source names a fixed version.