{"id":"ALSA-2026:4443","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 9.0.115 and .NET Runtime 9.0.14.Security Fix(es):  \n\n  * .net: .NET: Denial of Service via out-of-bounds read (CVE-2026-26127)\n  * asp.net: ASP.NET Core: Denial of Service via uncontrolled resource allocation (CVE-2026-26130)\n\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.\n","modified":"2026-03-16T08:30:07.603051Z","published":"2026-03-12T00:00:00Z","related":["CVE-2026-26127","CVE-2026-26130"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:4443"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-26127"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-26130"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2446098"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2446134"},{"type":"ADVISORY","url":"https://errata.almalinux.org/8/ALSA-2026-4443.html"}],"affected":[{"package":{"name":"aspnetcore-runtime-9.0","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/aspnetcore-runtime-9.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.14-1.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:4443.json"}},{"package":{"name":"aspnetcore-runtime-dbg-9.0","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/aspnetcore-runtime-dbg-9.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.14-1.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:4443.json"}},{"package":{"name":"aspnetcore-targeting-pack-9.0","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/aspnetcore-targeting-pack-9.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.14-1.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:4443.json"}},{"package":{"name":"dotnet-apphost-pack-9.0","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/dotnet-apphost-pack-9.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.14-1.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:4443.json"}},{"package":{"name":"dotnet-hostfxr-9.0","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/dotnet-hostfxr-9.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.14-1.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:4443.json"}},{"package":{"name":"dotnet-runtime-9.0","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/dotnet-runtime-9.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.14-1.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:4443.json"}},{"package":{"name":"dotnet-runtime-dbg-9.0","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/dotnet-runtime-dbg-9.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.14-1.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:4443.json"}},{"package":{"name":"dotnet-sdk-9.0","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/dotnet-sdk-9.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.115-1.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:4443.json"}},{"package":{"name":"dotnet-sdk-9.0-source-built-artifacts","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/dotnet-sdk-9.0-source-built-artifacts"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.115-1.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:4443.json"}},{"package":{"name":"dotnet-sdk-aot-9.0","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/dotnet-sdk-aot-9.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.115-1.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:4443.json"}},{"package":{"name":"dotnet-sdk-dbg-9.0","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/dotnet-sdk-dbg-9.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.115-1.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:4443.json"}},{"package":{"name":"dotnet-targeting-pack-9.0","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/dotnet-targeting-pack-9.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.14-1.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:4443.json"}},{"package":{"name":"dotnet-templates-9.0","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/dotnet-templates-9.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.115-1.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master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