Symlink Attack Affecting microsoft.netcore.app.runtime.osx-x64 package, versions [8.0.0,8.0.32)[9.0.0,9.0.21)[10.0.0,10.0.13)[11.0.0-preview.1,11.0.0-rc.2)


Severity

Recommended
0.0
high
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.34% (26th percentile)

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  • Snyk IDSNYK-DOTNET-MICROSOFTNETCOREAPPRUNTIMEOSXX64-20931013
  • published14 Oct 2026
  • disclosed13 Oct 2026
  • creditWeeraphat Srisutham, Ky0toFu, Leandro Batista, Kevin Schmidt, Attila.Cs, Stanley Tobias

Introduced: 13 Oct 2026

NewCVE-2026-96225  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

Upgrade Microsoft.NETCore.App.Runtime.osx-x64 to version 8.0.32, 9.0.21, 10.0.13, 11.0.0-rc.2 or higher.

Overview

Affected versions of this package are vulnerable to Symlink Attack in the handling of Unix named-mutex and shared-memory paths via insecure global directories, symlink races, and unsafe permission changes. An attacker can truncate or overwrite files, widen directory permissions, or elevate privileges by manipulating symbolic links or directory permissions.

CVSS Base Scores

version 4.0
version 3.1