What’s Vulnerable › Vulnerabilities

CVE-2026-52872: Streambert: Local File Exfiltration and Overwrite via Subtitle file: Protocol

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-18 · updated 2026-10-22
• Weakness: CWE-22

Description

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.

Affected products

• truelockmc streambert: before 2.5.0

References

• https://github.com/truelockmc/streambert/security/advisories/GHSA-v74h-2468-rxhh
• https://github.com/truelockmc/streambert/security/advisories/GHSA-v74h-2468-rxhh

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