What’s Vulnerable › Vulnerabilities

CVE-2026-52875: Streambert: Arbitrary Directory Creation and File Manipulation via Backup Handler

• Severity: high (CVSS 8.4 v4.0)
• 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 2.6.0, the perform-scheduled-backup IPC handler in src/ipc/storage.js takes settings.path from a renderer-supplied object and uses the resulting directory for fs.mkdirSync, fs.writeFileSync, fs.readdirSync, and fs.unlinkSync operations without checking that it is inside an authorized backup location. A compromised renderer can choose an absolute path or a relative traversal path to create directories and write a streambert-backup-[timestamp].json file containing renderer-controlled data. The pruning loop can also delete files in that directory whose names begin with streambert-backup- and end with .json. This vulnerability is fixed in 2.6.0.

Affected products

• truelockmc streambert: before 2.6.0

References

• http://github.com/truelockmc/streambert/commit/43566ed031183b046675761c9813c5379b619269
• https://github.com/truelockmc/streambert/pull/149
• https://github.com/truelockmc/streambert/security/advisories/GHSA-c64m-cx97-6rc9
• https://github.com/truelockmc/streambert/security/advisories/GHSA-c64m-cx97-6rc9

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