RHSA-2026:49712: Important: golang security update

The golang packages provide the Go programming language compiler.Security Fix(es): net/mail: golang: net/mail: Denial of Service via pathological email address parsing (CVE-2026-42499) cmd/go: golang: Go command (cmd/go): Integrity bypass due to checksum validation flaw via malicious module proxy (CVE-2026-42501) html/template: golang: Go html/template: Cross-Site Scripting via improper URL escaping in meta tag content (CVE-2026-39823) cmd/go: golang: Go 'go bug' command: Arbitrary file overwrite via symlink attack (CVE-2026-39819) net/http/internal/http2: golang: golang.org/x/net: Go HTTP/2: Denial of Service via malformed SETTINGSMAXFRAMESIZE frame (CVE-2026-33814) net/mail: golang: Go net/mail: Denial of Service via crafted email inputs (CVE-2026-39820) net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811) net/http/httputil: golang: net/http/httputil: ReverseProxy forwards hidden query parameters, potentially bypassing security controls (CVE-2026-39825) cmd/go: golang: Go tool pack: Arbitrary file write via malicious archive extraction (CVE-2026-39817) html/template: golang: html/template: Cross-site scripting due to incorrect script tag escaping (CVE-2026-39826) golang.org/x/net/idna: golang: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing (CVE-2026-39821) net/textproto: golang: Golang net/textproto: Misleading error messages via input injection (CVE-2026-42507) crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries (CVE-2026-27145) os: golang: Go os.Root: Symlink following vulnerability allows directory traversal (CVE-2026-39822) 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.

— Red Hat