CVE-2023-30626 Jellyfin vulnerable to directory traversal and file write causing arbitrary code execution
Attackers can exploit directory traversal in Jellyfin to write arbitrary files, potentially leading to code execution when combined with XSS.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-30626?
CVE-2023-30626 is a high-severity path traversal vulnerability in jellyfin, published on 24 Apr 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-22
Which versions are affected by CVE-2023-30626?
2 open source packages ship an affected version, including Jellyfin.Controller. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
Jellyfin.Controller NuGet | From 10.8.0 | 10.8.10 |
Jellyfin.Controller NuGet | From 10.8.0 | 10.8.10 |
Products include Jellyfin Jellyfin.
How do I fix CVE-2023-30626?
Upgrade Jellyfin.Controller to 10.8.10 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2023-30626 being exploited?
There is no known exploitation of CVE-2023-30626 in the wild and no public exploit code.
Other vulnerabilities in jellyfin
- CVE-2026-35031 Jellyfin: Potential RCE via subtitle upload path traversal + .strm chain
- CVE-2026-31852 Jellyfin Possible Organization/Secret Compromise from dangerous CI implementation
- CVE-2026-35033 Jellyfin: Potential SSRF + Arbitrary file read via stream argument injection
- CVE-2023-30627 jellyfin-web has a stored cross-site scripting vulnerability in devices.js
- CVE-2022-35909 Incorrect Access Control and Cross Site Scripting in Jellyfin
Sources
Also known as GHSA-9p5f-5x8v-x65m.