CVE-2026-52872
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk4th percentile - higher than 4% of all known CVEs
Summary
Vulnerability in Streambert (before 2.5.0) in the downloadSubtitleFile function, which accepts a renderer-supplied URL with file: scheme and copies the file to a chosen location. A compromised renderer can copy any file readable by the StreamBERT process.
Risk Assessment
An attacker can access sensitive local data or overwrite existing files, posing a serious security threat.
Recommendation
Update Streambert to version 2.5.0 or later. Restrict the renderer's ability to use file: scheme.
Original NVD description (English source)
Streambert is a cross-platform Electron Desktop App to stream and download video content. Prior to 2.5.0, the downloadSubtitleFile utility in src/ipc/downloads.js, reached through the run-download IPC channel, accepts a renderer-supplied subtitle url using the file: URI scheme and passes its decoded pathname to fs.copyFileSync. The renderer also controls downloadPath, which determines the destination path. A compromised renderer can therefore copy any file readable by the StreamBERT process into an attacker-chosen writable location, exposing sensitive local data, and can overwrite existing writable files. This vulnerability is fixed in 2.5.0.