CVE-2025-66203: LEMON8866 Streamvault

Critical severity, CVSS 9.1. EPSS: 0.8% chance of exploitation in the next 30 days.

StreamVault is a video download integration solution. Prior to version 251126, a Remote Code Execution (RCE) vulnerability exists in the stream-vault application (SpiritApplication). The application allows administrators to configure yt-dlp arguments via the /admin/api/saveConfig endpoint without sufficient validation. These arguments are stored globally and subsequently used in YtDlpUtil.java when constructing the command line to execute yt-dlp. This issue has been patched in version 251126.

Affected products

• LEMON8866 Streamvault: before 251126 (fixed in 251126)

Published 2025-12-27. Last modified 2026-10-07.