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CVE-2026-52877— Streambert : Insecure Protocol Execution in open-external IPC Handler

Quick assessment

Affected
truelockmc streambert
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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open-external IPC处理程序未验证协议，将渲染器提供的URL直接传递给Electron的shell.openExternal，可能导致主机打开本地文件、访问远程资源或启动脚本和应用程序。

CVSS 8.3 · High EPSS 0.41% · P34

Possible ATT&CK Techniques 1 AI

T1210 · Exploitation of Remote Services

Affected Version Matrix 1

VendorProduct Version RangeStatus
truelockmc streambert < 2.6.0 affected
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I. Basic Information for CVE-2026-52877

Vulnerability Information
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Vulnerability Title
Streambert : Insecure Protocol Execution in open-external IPC Handler
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-external IPC handler in src/ipc/downloads.js passes a renderer-supplied url directly to Electron's shell.openExternal without validating its protocol. A compromised renderer can submit file: URIs or operating-system-specific custom schemes, causing the host to open local files, access remote resources through registered handlers, or launch scripts and applications supported by those handlers. This issue is fixed in version 2.6.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
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open-external IPC处理程序未验证协议，将渲染器提供的URL直接传递给Electron的shell.openExternal，可能导致主机打开本地文件、访问远程资源或启动脚本和应用程序。
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-2026-52877

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III. Intelligence Information for CVE-2026-52877

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Patches & Fixes for CVE-2026-52877 (1)

Vendor Advisories for CVE-2026-52877 (1)

Vendor Pages for CVE-2026-52877 (1)

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

CVE-2026-52876 8.8 HIGH Streambert: Arbitrary File Execution via VLC/mpv Launcher Fallback
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-2026-52873 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