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CVE-2026-52876— Streambert: Arbitrary File Execution via VLC/mpv Launcher Fallback

Quick assessment

Affected
truelockmc streambert
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

true_lock Streambert是德国true_lock个人开发者的一款跨平台的 Electron 桌面应用。 true_lock Streambert 2.6.0之前版本存在安全漏洞，该漏洞源于src/ipc/player.js中的open-path-at-time IPC处理程序未验证渲染器控制的filePath类型或位置，可能导致操作系统以StreamBERT进程权限启动本地可执行文件、脚本或其他文件，从而逃逸渲染器沙箱。

CVSS 8.8 · High EPSS 0.15% · P5

Affected Version Matrix 1

VendorProduct Version RangeStatus
truelockmc streambert < 2.6.0 affected
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I. Basic Information for CVE-2026-52876

Vulnerability Information
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Vulnerability Title
Streambert: Arbitrary File Execution via VLC/mpv Launcher Fallback
Source: CVE Program / CVE List V5
Vulnerability Description
Streambert is a cross-platform Electron Desktop App to stream and download video content. Prior to version 2.6.0, the open-path-at-time IPC handler in src/ipc/player.js accepts a renderer-controlled filePath without validating its type or location. If the mpv or VLC launch attempts are skipped or fail, the handler passes filePath to Electron's shell.openPath. A compromised renderer can provide the path of a local executable, script, shortcut, or other file with an executing default handler, causing the operating system to launch it with the privileges of the StreamBERT process and enabling escape from the renderer sandbox. This issue is fixed in version 2.6.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
true_lock Streambert 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
true_lock Streambert是德国true_lock个人开发者的一款跨平台的 Electron 桌面应用。 true_lock Streambert 2.6.0之前版本存在安全漏洞，该漏洞源于src/ipc/player.js中的open-path-at-time IPC处理程序未验证渲染器控制的filePath类型或位置，可能导致操作系统以StreamBERT进程权限启动本地可执行文件、脚本或其他文件，从而逃逸渲染器沙箱。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
truelockmc streambert < 2.6.0 -

II. Public POCs for CVE-2026-52876

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8185 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-52876

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Patches & Fixes for CVE-2026-52876 (2)

Vendor Advisories for CVE-2026-52876 (1)

Vendor Pages for CVE-2026-52876 (1)

Same Patch Batch · truelockmc · 2026-08-18 · 5 CVEs total

CVE-2026-52872 8.8 HIGH Streambert: Local File Exfiltration and Overwrite via Subtitle file: Protocol
CVE-2026-52875 8.4 HIGH Streambert: Arbitrary Directory Creation and File Manipulation via Backup Handler
CVE-2026-52877 8.3 HIGH Streambert : Insecure Protocol Execution in open-external IPC Handler
CVE-2026-52873 6.9 MEDIUM Streambert: Global CSP Removal in Wyzie Redeem Window Enables Unconstrained XSS in Electro

IV. Related Vulnerabilities

Same product: streambert
Same vendor: truelockmc
Same weakness: CWE-20

V. Comments for CVE-2026-52876

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