Critical severity9.1NVD Advisory· Published Apr 21, 2026· Updated Apr 27, 2026
CVE-2026-40372
CVE-2026-40372
Description
Improper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
Microsoft.AspNetCore.DataProtectionNuGet | >= 10.0.0, < 10.0.7 | 10.0.7 |
Affected products
3- osv-coords2 versions
>= 10.0.0, < 10.0.7+ 1 more
- (no CPE)range: >= 10.0.0, < 10.0.7
- (no CPE)range: >= 10.0.0, < 10.0.7
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-9mv3-2cwr-p262ghsaADVISORY
- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40372nvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-40372ghsaADVISORY
- github.com/dotnet/announcements/issues/395ghsaWEB
- github.com/dotnet/aspnetcore/security/advisories/GHSA-9mv3-2cwr-p262ghsaWEB
News mentions
2- ⚡ Weekly Recap: Fast16 Malware, XChat Launch, Federal Backdoor, AI Employee Tracking & MoreThe Hacker News · Apr 27, 2026
- 27th April – Threat Intelligence ReportCheck Point Research · Apr 27, 2026