Improper Verification of Cryptographic Signature Affecting dotnet-hostfxr-10.0 package, versions <0:10.0.7-1.amzn2023.0.1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.02% (7th percentile)

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  • Snyk IDSNYK-AMZN2023-DOTNETHOSTFXR100-16351744
  • published3 May 2026
  • disclosed21 Apr 2026

Introduced: 21 Apr 2026

CVE-2026-40372  (opens in a new tab)
CWE-347  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 dotnet-hostfxr-10.0 to version 0:10.0.7-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-1634.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dotnet-hostfxr-10.0 package and not the dotnet-hostfxr-10.0 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

Improper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.

CVSS Base Scores

version 3.1