RCE in Lemon8866 Streamvault
CVE-2025-66203
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (54.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000
Affected products
- Lemon8866 Streamvault — versions < 251126
Weakness classification (CWE)
References
- github.com/lemon8866/StreamVault/security/advisories/GHSA-c747-q388-3v6m (Exploit, Vendor Advisory)
- github.com/lemon8866/StreamVault/releases/tag/251226 (Product, Release Notes)
Frequently asked questions
- What is CVE-2025-66203?
- CVE-2025-66203 is a critical-severity vulnerability in Lemon8866 Streamvault, classified under OS Command Injection. CVSS score: 9.9/10. Published 2025-12-27.
- How severe is CVE-2025-66203?
- Critical severity. CVSS v3 base score is 9.9 out of 10.