CVE-2026-52873
Streambert: Global CSP Removal in Wyzie Redeem Window Enables Unconstrained XSS in Electron Renderer
Description
Streambert is a cross-platform Electron Desktop App to stream and download video content. From version 2.5.0 until version 2.6.0, the wyzie-open-redeem IPC handler in index.js creates the partition:wyzie-redeem Electron session and registers an onHeadersReceived hook that removes the Content-Security-Policy header from every response in that session. The redeem window also lacks a setWindowOpenHandler restriction, so script injection in sub.wyzie.io, a loaded third-party resource, or a site reached through navigation executes without CSP constraints and can affect additional windows and persistent session storage. A user must open the Wyzie API key redemption window, and exploitation requires attacker-controlled script content in a loaded page. The resulting renderer script can invoke renderer-exposed application functionality and can be chained with other vulnerabilities to access internal services or sensitive data. This issue is fixed in version 2.6.0.
INFO
Published Date :
Aug. 18, 2026, 10:16 p.m.
Last Modified :
Oct. 22, 2026, 5:09 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update Streambert to version 2.6.0 or later.
- Review Electron app security configurations.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-52873.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-52873 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-52873
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-52873 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-52873 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Translated by [email protected]
Oct. 22, 2026
Action Type Old Value New Value Added Translation Title: streambert de truelockmc, Description: Streambert es una aplicación de escritorio Electron multiplataforma para transmitir y descargar contenido de video. Desde la versión 2.5.0 hasta la versión 2.6.0, el gestor IPC wyzie-open-redeem en index.js crea la sesión Electron partition:wyzie-redeem y registra un hook onHeadersReceived que elimina el encabezado Content-Security-Policy de cada respuesta en esa sesión. La ventana de canje también carece de una restricción setWindowOpenHandler, por lo que la inyección de scripts en sub.wyzie.io, un recurso de terceros cargado, o un sitio alcanzado a través de la navegación se ejecuta sin restricciones de CSP y puede afectar a ventanas adicionales y al almacenamiento persistente de la sesión. Un usuario debe abrir la ventana de canje de clave de API de Wyzie, y la explotación requiere contenido de script controlado por el atacante en una página cargada. El script de renderizado resultante puede invocar la funcionalidad de la aplicación expuesta al renderizador y puede encadenarse con otras vulnerabilidades para acceder a servicios internos o datos sensibles. Este problema está solucionado en la versión 2.6.0. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 21, 2026
Action Type Old Value New Value Added Reference https://github.com/truelockmc/streambert/security/advisories/GHSA-2j2q-qvpf-wh43 Added SSVC {'id': 'CVE-2026-52873', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-21T19:17:53.917334Z'} -
New CVE Received by [email protected]
Aug. 18, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'truelockmc', 'product': 'streambert', 'versions': [{'status': 'affected', 'version': '< 2.6.0'}]}] Added Description Streambert is a cross-platform Electron Desktop App to stream and download video content. From version 2.5.0 until version 2.6.0, the wyzie-open-redeem IPC handler in index.js creates the partition:wyzie-redeem Electron session and registers an onHeadersReceived hook that removes the Content-Security-Policy header from every response in that session. The redeem window also lacks a setWindowOpenHandler restriction, so script injection in sub.wyzie.io, a loaded third-party resource, or a site reached through navigation executes without CSP constraints and can affect additional windows and persistent session storage. A user must open the Wyzie API key redemption window, and exploitation requires attacker-controlled script content in a loaded page. The resulting renderer script can invoke renderer-exposed application functionality and can be chained with other vulnerabilities to access internal services or sensitive data. This issue is fixed in version 2.6.0. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N Added CWE CWE-79 Added CWE CWE-693 Added Reference https://github.com/truelockmc/streambert/commit/0bd6b6ca8c830f22f75de1aa2e0d8b9bdf6d34c7 Added Reference https://github.com/truelockmc/streambert/pull/126 Added Reference https://github.com/truelockmc/streambert/releases/tag/2.6.0 Added Reference https://github.com/truelockmc/streambert/security/advisories/GHSA-2j2q-qvpf-wh43