Path traversal in Jellyfin - #VU151686
Published: September 23, 2026
Vulnerability identifier: #VU151686
CSH Severity: Low
CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in PluginsController.cs. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.
Affected software
Jellyfin
Remediation
Install updates from vendor's website.
Jellyfin - update to 12.0