CVE-2026-50544

NortheBridge/luminalshine has Incorrect Permission Assignment for Critical Resource and Creation of Temporary File in Directory with Insecure Permissions

State: Published
Severity: 6.3 Medium
Published: Aug 12, 2026
Updated: Aug 14, 2026
Reserved: Jun 4, 2026

Read the record on cve.org

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`.

Scores

CVSS	Score	Vector	Source
3.1	6.3 Medium	CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-379 Creation of Temporary File in Directory with Insecure Permissions
CWE-732 Incorrect Permission Assignment for Critical Resource

Affected Products

Product	Versions
luminalshineNortheBridge	< 26.05.0-rc4Affected

References

https://github.com/NortheBridge/luminalshine/security/advisories/GHSA-52q6-5x97-2747

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