RLSA-2026:21291
RLSA-2026:21291 · Important: .NET 8.0 security update
This page contains facts from public vulnerability sources. Check the original advisory before updating.
.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 8.0.127 and .NET Runtime 8.0.27.Security Fix(es): * serialize-javascript: serialize-javascript: Denial of Service via specially crafted array-like object serialization (CVE-2026-34043) * dotnet: .NET: infinite loop allows an attacker to cause a denial of service (CVE-2026-42899) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
CVSS 7.5 · High · Fix available
- Published
- Updated
Stack: system
Affected products and versions
dotnet8.0 Rocky Linux:8
- Affected ranges
- ECOSYSTEM: < 0:8.0.127-1.el8_10
Update to 0:8.0.127-1.el8_10