CVE-2026-50544
NortheBridge/luminalshine has Incorrect Permission Assignment for Critical Resource and Creation of Temporary File in Directory with Insecure Permissions
Description
NortheBridge/luminalshine is a Sunshine-compatible game stream host for Moonlight. Prior to version 26.05.0-rc4, a latent gap exists on a default install, the file at `src/platform/windows/misc.cpp` lives at `C:\ProgramData\LuminalShine\config\apps.json` and is created by the `SYSTEM` service. Under Windows' default `C:\ProgramData` inheritance, that gives `BUILTIN\Users` only Read+Execute — not writable — so the canonical EoP doesn't actually trigger on a vanilla install. Version 26.05.0-rc4 contains a patch for the issue. As a workaround, use default condition DACLs for `ProgramData`.
INFO
Published Date :
Aug. 13, 2026, 12:17 a.m.
Last Modified :
Oct. 24, 2026, 4:10 p.m.
Remotely Exploit :
No
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] |
Solution
- Update LuminalShine to the latest version.
- Apply default DACLs to ProgramData directory.
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-2026-50544.
| URL | Resource |
|---|---|
| https://github.com/NortheBridge/luminalshine/security/advisories/GHSA-52q6-5x97-2747 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-50544 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-2026-50544
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-2026-50544 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-50544 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.
-
CVE Translated by [email protected]
Oct. 24, 2026
Action Type Old Value New Value Changed Translation Title: luminalshine de NortheBridge, Description: NortheBridge/luminalshine es un host de transmisión de juegos compatible con Sunshine para Moonlight. Antes de la versión 26.05.0-rc4, existe una brecha latente en una instalación predeterminada: el archivo en ’src/platform/windows/misc.cpp’ reside en ’C:\ProgramData\LuminalShine\config\apps.json’ y es creado por el servicio ’SYSTEM’. Bajo la herencia predeterminada de Windows para ’C:\ProgramData’, eso otorga a ’BUILTIN\Users’ solo permisos de Lectura+Ejecución - no de escritura - por lo que la EoP canónica no se activa realmente en una instalación limpia. La versión 26.05.0-rc4 contiene un parche para el problema. Como solución alternativa, utilice DACL de condición predeterminada para ’ProgramData’. Title: luminalshine de NortheBridge, Description: NortheBridge/luminalshine es un host de transmisión de juegos compatible con Sunshine para Moonlight. Antes de la versión 26.05.0-rc4, existe una brecha latente en una instalación predeterminada: el archivo en ’src/platform/windows/misc.cpp’ reside en ’C:\ProgramData\LuminalShine\config\apps.json’ y es creado por el servicio ’SYSTEM’. Bajo la herencia predeterminada de Windows para ’C:\ProgramData’, eso otorga a ’BUILTIN\Users’ solo permisos de Lectura+Ejecución - no de escritura - por lo que la EoP canónica no se activa realmente en una instalación limpia. La versión 26.05.0-rc4 contiene un parche para el problema. Como solución alternativa, utilice DACL de condición predeterminada para ’ProgramData’. -
CVE Translated by [email protected]
Oct. 23, 2026
Action Type Old Value New Value Added Translation Title: luminalshine de NortheBridge, Description: NortheBridge/luminalshine es un host de transmisión de juegos compatible con Sunshine para Moonlight. Antes de la versión 26.05.0-rc4, existe una brecha latente en una instalación predeterminada: el archivo en ’src/platform/windows/misc.cpp’ reside en ’C:\ProgramData\LuminalShine\config\apps.json’ y es creado por el servicio ’SYSTEM’. Bajo la herencia predeterminada de Windows para ’C:\ProgramData’, eso otorga a ’BUILTIN\Users’ solo permisos de Lectura+Ejecución - no de escritura - por lo que la EoP canónica no se activa realmente en una instalación limpia. La versión 26.05.0-rc4 contiene un parche para el problema. Como solución alternativa, utilice DACL de condición predeterminada para ’ProgramData’. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 14, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-50544', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-14T22:23:37.675303Z'} -
New CVE Received by [email protected]
Aug. 13, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'NortheBridge', 'product': 'luminalshine', 'versions': [{'status': 'affected', 'version': '< 26.05.0-rc4'}]}] Added Description NortheBridge/luminalshine is a Sunshine-compatible game stream host for Moonlight. Prior to version 26.05.0-rc4, a latent gap exists on a default install, the file at `src/platform/windows/misc.cpp` lives at `C:\ProgramData\LuminalShine\config\apps.json` and is created by the `SYSTEM` service. Under Windows' default `C:\ProgramData` inheritance, that gives `BUILTIN\Users` only Read+Execute — not writable — so the canonical EoP doesn't actually trigger on a vanilla install. Version 26.05.0-rc4 contains a patch for the issue. As a workaround, use default condition DACLs for `ProgramData`. Added CVSS V3.1 AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H Added CWE CWE-379 Added CWE CWE-732 Added Reference https://github.com/NortheBridge/luminalshine/security/advisories/GHSA-52q6-5x97-2747