Vulnerability · Published Aug 18, 2026 · Assigned by GitHub_M

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

High 8.4

In plain English

A high-severity path traversal in streambert from truelockmc. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).

Severity (CVSS 4.0)8.4High

Exploit odds (30 days)0.2%top 94.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
truelockmc	streambert	< 2.6.0

Weakness: CWE-22, CWE-73 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H

References

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