Jellyfin vulnerable to directory traversal and file write causing arbitrary code execution
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 2.0%
exploitation probability
2.0%top 21% of all CVEs
observed exploitation
nono source reports it
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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
jellyfin · jellyfinReferences
https://github.com/jellyfin/jellyfin/blob/22d880662283980dec994cd7d35fe269613bfce3/Jellyfin.Api/Controllers/ClientLogController.cs#L44https://github.com/jellyfin/jellyfin/commit/82ad2633fdfb1c37a158057c7935f83e1129eda7https://github.com/jellyfin/jellyfin/pull/5918https://github.com/jellyfin/jellyfin/releases/tag/v10.8.10https://github.com/jellyfin/jellyfin/security/advisories/GHSA-9p5f-5x8v-x65mhttps://github.com/jellyfin/jellyfin-web/security/advisories/GHSA-89hp-h43h-r5pq