{"schema_version": "1.7.0", "id": "RLSA-2026:25113", "modified": "2026-06-12T06:04:38.642883Z", "published": "2026-06-12T06:00:53.963748Z", "upstream": ["CVE-2026-45491", "CVE-2026-45591"], "summary": "Important: .NET 9.0 security update", "details": ".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.\n\nNew versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 9.0.118 and .NET Runtime 9.0.17.Security Fix(es):\n\n* dotnet: .NET: Local file tampering via link following vulnerability (CVE-2026-45491)\n\n* dotnet: ASP.NET Core: Denial of Service via uncontrolled resource consumption (CVE-2026-45591)\n\nFor 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.", "severity": [{"type": "CVSS_V3", "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}], "affected": [{"package": {"ecosystem": "Rocky Linux:8", "name": "dotnet9.0", "purl": "pkg:rpm/rocky-linux/dotnet9.0?distro=rocky-linux-8&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:9.0.118-1.el8_10"}], "database_specific": {"yum_repository": "AppStream"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:25113"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2487164"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2487224"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}]}