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GHSA-387c-qmrw-59qv: Duplicate Advisory: Microsoft Security Advisory CVE-2026-26131 – .NET Elevation of Privilege Vulnerability

March 10, 2026 (updated March 11, 2026)

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-crjq-wm6x-6qx7. This link is maintained to preserve external references.

Original Description

Incorrect default permissions in .NET allows an authorized attacker to elevate privileges locally.

References

  • github.com/advisories/GHSA-387c-qmrw-59qv
  • github.com/dotnet/dotnet
  • msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26131
  • nvd.nist.gov/vuln/detail/CVE-2026-26131

Code Behaviors & Features

Detect and mitigate GHSA-387c-qmrw-59qv with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →

Affected versions

All versions starting from 10.0.0 before 10.0.4

Fixed versions

  • 10.0.4

Solution

Upgrade to version 10.0.4 or above.

Impact 7.8 HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-276: Incorrect Default Permissions

Source file

nuget/Microsoft.NETCore.App.Runtime.linux-musl-arm64/GHSA-387c-qmrw-59qv.yml

Spotted a mistake? Edit the file on GitLab.

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