CVE-2026-52875

Streambert: Arbitrary Directory Creation and File Manipulation via Backup Handler

HIGH
8.4
CVSS Score
Published: August 18, 2026 at 09:30 PM UTC
Updated: October 22, 2026 at 05:09 PM UTC
1 product affected across 1 vendorStreambert

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Severity
HIGH8.4
Exploit prediction
EPSS 0.2%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.6.0
Affected range stops below 2.6.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.4HIGHGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-22CWE-73

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