CVE-2023-30626

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.

• CWE-22

• https://github.com/jellyfin/jellyfin-web/security/advisories/GHSA-89hp-h43h-r5pqVendor Advisory
• https://github.com/jellyfin/jellyfin/blob/22d880662283980dec994cd7d35fe269613bfce3/Jellyfin.Api/Controllers/ClientLogController.cs#L44Exploit, Vendor Advisory
• https://github.com/jellyfin/jellyfin/commit/82ad2633fdfb1c37a158057c7935f83e1129eda7Patch
• https://github.com/jellyfin/jellyfin/pull/5918Patch, Vendor Advisory
• https://github.com/jellyfin/jellyfin/releases/tag/v10.8.10Release Notes
• https://github.com/jellyfin/jellyfin/security/advisories/GHSA-9p5f-5x8v-x65mExploit, Patch, Vendor Advisory
• https://github.com/jellyfin/jellyfin-web/security/advisories/GHSA-89hp-h43h-r5pqVendor Advisory
• https://github.com/jellyfin/jellyfin/blob/22d880662283980dec994cd7d35fe269613bfce3/Jellyfin.Api/Controllers/ClientLogController.cs#L44Exploit, Vendor Advisory
• https://github.com/jellyfin/jellyfin/commit/82ad2633fdfb1c37a158057c7935f83e1129eda7Patch
• https://github.com/jellyfin/jellyfin/pull/5918Patch, Vendor Advisory
• https://github.com/jellyfin/jellyfin/releases/tag/v10.8.10Release Notes
• https://github.com/jellyfin/jellyfin/security/advisories/GHSA-9p5f-5x8v-x65mExploit, Patch, Vendor Advisory

Published

Apr 24, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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