Path Traversal in Jellyfin
CVE-2026-49247
Jellyfin is an open source self hosted media server. From 10.9.0 until 10.11.10, the POST /ClientLog/Document endpoint accepts the Authorization header's Client and Version fields and uses them unsanitized as components of the on-disk file…
Vulnerability class: Path Traversal (Directory Traversal)
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Jellyfin — versions >= 10.9.0, < 10.11.10
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-49247?
- CVE-2026-49247 is a high-severity vulnerability in Jellyfin, classified under Path Traversal. CVSS score: 8.8/10. Published 2026-06-24.
- How severe is CVE-2026-49247?
- High severity. CVSS v3 base score is 8.8 out of 10.