(Pwn2Own) Music Assistant _update_library_item External Control of File Path Remote Code Execution Vulnerability
Vulnerability Details
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Music Assistant. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the _update_library_item method. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of root.
Additional Details
Music Assistant has issued an update to correct this vulnerability. More details can be found at:
https://github.com/music-assistant/server/security/advisories/GHSA-7jcc-p6xr-835j
Disclosure Timeline
- 2025-11-05 - Vulnerability reported to vendor
- 2026-03-03 - Coordinated public release of advisory
- 2026-03-03 - Advisory Updated
Credit
Emanuele Barbeno, Cyrill Bannwart, Urs Mueller, Lukasz D, Yves Bieri of Compass Security
