CVE-2021-21402 HIGH

CVE-2021-21402: Unauthenticated Arbitrary File Access in Jellyfin

Vendor Jellyfin
Product jellyfin
Weakness CWE-22 · Path traversal
Published March 23, 2021
Last update August 3, 2024

CVSS base score

7.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

What the vulnerability does

01Description

Jellyfin is a Free Software Media System. In Jellyfin before version 10.7.1, with certain endpoints, well crafted requests will allow arbitrary file read from a Jellyfin server's file system. This issue is more prevalent when Windows is used as the host OS. Servers that are exposed to the public Internet are potentially at risk. This is fixed in version 10.7.1. As a workaround, users may be able to restrict some access by enforcing strict security permissions on their filesystem, however, it is recommended to update as soon as possible.

Key dates

02Disclosure timeline

March 23, 2021 CVE published
August 3, 2024 Record updated