high7.5
CVE-2026-42899
Loop with unreachable exit condition ('infinite loop') in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Impact
Loop with unreachable exit condition ('infinite loop') in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| nuget | Microsoft.AspNetCore.App.Runtime.win-arm | >= 8.0.0, <= 8.0.26 | 8.0.27 |
| nuget | Microsoft.AspNetCore.App.Runtime.win-arm64 | >= 8.0.0, <= 8.0.26 | 8.0.27 |
| nuget | Microsoft.AspNetCore.App.Runtime.win-x64 | >= 8.0.0, <= 8.0.26 | 8.0.27 |
| nuget | Microsoft.AspNetCore.App.Runtime.win-x86 | >= 8.0.0, <= 8.0.26 | 8.0.27 |
| nuget | Microsoft.AspNetCore.App.Runtime.linux-arm | >= 8.0.0, <= 8.0.26 | 8.0.27 |
| nuget | Microsoft.AspNetCore.App.Runtime.linux-arm64 | >= 8.0.0, <= 8.0.26 | 8.0.27 |
| nuget | Microsoft.AspNetCore.App.Runtime.linux-musl-arm | >= 8.0.0, <= 8.0.26 | 8.0.27 |
| nuget | Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 | >= 8.0.0, <= 8.0.26 | 8.0.27 |
| nuget | Microsoft.AspNetCore.App.Runtime.linux-musl-x64 | >= 8.0.0, <= 8.0.26 | 8.0.27 |
| nuget | Microsoft.AspNetCore.App.Runtime.linux-x64 | >= 8.0.0, <= 8.0.26 | 8.0.27 |
| nuget | Microsoft.AspNetCore.App.Runtime.osx-arm64 | >= 8.0.0, <= 8.0.26 | 8.0.27 |
| nuget | Microsoft.AspNetCore.App.Runtime.osx-x64 | >= 8.0.0, <= 8.0.26 | 8.0.27 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | .Net | from 8.0.0 before 8.0.27 from 9.0.0 before 9.0.16 from 10.0.0 before 10.0.8 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-9v76-4qcc-frgh
- https://github.com/dotnet/aspnetcore/security/advisories/GHSA-9v76-4qcc-frgh
- https://nvd.nist.gov/vuln/detail/CVE-2026-42899
- https://github.com/dotnet/announcements/issues/397
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42899
- https://access.redhat.com/errata/RHSA-2026:17464
- https://access.redhat.com/errata/RHSA-2026:17527
- https://access.redhat.com/errata/RHSA-2026:17682
- https://access.redhat.com/errata/RHSA-2026:21286
- https://access.redhat.com/errata/RHSA-2026:21291
- https://access.redhat.com/errata/RHSA-2026:21293
- https://access.redhat.com/errata/RHSA-2026:21294
- https://access.redhat.com/errata/RHSA-2026:21295
- https://access.redhat.com/errata/RHSA-2026:21296
- https://access.redhat.com/errata/RHSA-2026:21297
- https://access.redhat.com/errata/RHSA-2026:21754
- https://access.redhat.com/errata/RHSA-2026:22145
- https://access.redhat.com/errata/RHSA-2026:24332
- https://access.redhat.com/errata/RHSA-2026:24333
- https://access.redhat.com/errata/RHSA-2026:24334
- https://access.redhat.com/errata/RHSA-2026:24335
- https://access.redhat.com/errata/RHSA-2026:24336
- https://access.redhat.com/security/cve/CVE-2026-42899
- https://bugzilla.redhat.com/show_bug.cgi?id=2476605
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42899.json