High severity · published Apr 24, 2023
CVE-2023-30626
Jellyfin vulnerable to directory traversal and file write causing arbitrary code execution
8.1
CVSS
2%
EPSS
No
On KEV
Description
Jellyfin is a free-software media system. Versions starting with 10.8.0 and prior to 10.8.10 and prior have a directory traversal vulnerability inside the `ClientLogController`, specifically `/ClientLog/Document`. When combined with a cross-site scripting vulnerability (CVE-2023-30627), this can result in file write and arbitrary code execution. Version 10.8.10 has a patch for this issue. There are no known workarounds.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.0% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JE
jellyfin · jellyfin
>= 10.8.0, < 10.8.10 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-30626
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-30626
Vendor Advisory
https://github.com/jellyfin/jellyfin-web/security/advisories/GHSA-89hp-h43h-r5pq
Exploit
https://github.com/jellyfin/jellyfin/blob/22d880662283980dec994cd7d35fe269613bfce3/Jellyfin.Api/Controllers/ClientLogController.cs#L44
Patch
https://github.com/jellyfin/jellyfin/commit/82ad2633fdfb1c37a158057c7935f83e1129eda7
Patch
https://github.com/jellyfin/jellyfin/pull/5918
Release Notes
https://github.com/jellyfin/jellyfin/releases/tag/v10.8.10
Exploit
https://github.com/jellyfin/jellyfin/security/advisories/GHSA-9p5f-5x8v-x65m
More from jellyfin
9.8
CVE-2026-31852
Jellyfin Possible Organization/Secret Compromise from dangerous CI implementation
9.1
CVE-2026-35033
Jellyfin: Potential SSRF + Arbitrary file read via stream argument injection
8.8
CVE-2026-48793
Jellyfin: Potential FFmpeg argument injection via unescaped subtitle file path
8.8
CVE-2026-49247
Jellyfin: Potential Authenticated path traversal in /ClientLog/Document
8.8
CVE-2026-35031
Jellyfin: Potential RCE via subtitle upload path traversal + .strm chain