{"id":"ALSA-2026:8470","summary":"Important: .NET 8.0 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 8.0.126 and .NET Runtime 8.0.26.Security Fix(es):  \n\n  * dotnet: .NET: Security Bypass and Denial of Service Vulnerability (CVE-2026-26171)\n  * dotnet: .NET: Denial of Service via stack overflow (CVE-2026-32203)\n  * dotnet: .NET: Denial of Service via Infinite Recursion in XmlDecryptionTransform (CVE-2026-33116)\n  * dotnet: Dotnet: SMTP Command Injection and Header Injection via MailAddress parsing flaw (CVE-2026-32178)\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":"2026-04-21T10:59:01.004348513Z","published":"2026-04-16T00:00:00Z","related":["CVE-2026-26171","CVE-2026-32178","CVE-2026-32203","CVE-2026-33116"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:8470"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-26171"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-32178"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-32203"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-33116"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2457739"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2457740"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2457741"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2457781"},{"type":"ADVISORY","url":"https://errata.almalinux.org/10/ALSA-2026-8470.html"}],"affected":[{"package":{"name":"aspnetcore-runtime-8.0","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/aspnetcore-runtime-8.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.26-1.el10_1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:8470.json"}},{"package":{"name":"aspnetcore-runtime-dbg-8.0","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/aspnetcore-runtime-dbg-8.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.26-1.el10_1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:8470.json"}},{"package":{"name":"aspnetcore-targeting-pack-8.0","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/aspnetcore-targeting-pack-8.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.26-1.el10_1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:8470.json"}},{"package":{"name":"dotnet-apphost-pack-8.0","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/dotnet-apphost-pack-8.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.26-1.el10_1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:8470.json"}},{"package":{"name":"dotnet-hostfxr-8.0","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/dotnet-hostfxr-8.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.26-1.el10_1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:8470.json"}},{"package":{"name":"dotnet-runtime-8.0","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/dotnet-runtime-8.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.26-1.el10_1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:8470.json"}},{"package":{"name":"dotnet-runtime-dbg-8.0","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/dotnet-runtime-dbg-8.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.26-1.el10_1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:8470.json"}},{"package":{"name":"dotnet-sdk-8.0","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/dotnet-sdk-8.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.126-1.el10_1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:8470.json"}},{"package":{"name":"dotnet-sdk-8.0-source-built-artifacts","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/dotnet-sdk-8.0-source-built-artifacts"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.126-1.el10_1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:8470.json"}},{"package":{"name":"dotnet-sdk-dbg-8.0","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/dotnet-sdk-dbg-8.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.126-1.el10_1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:8470.json"}},{"package":{"name":"dotnet-targeting-pack-8.0","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/dotnet-targeting-pack-8.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.26-1.el10_1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2026:8470.json"}},{"package":{"name":"dotnet-templates-8.0","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/dotnet-templates-8.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.126-1.el10_1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/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