{"schema_version": "1.7.0", "id": "RLSA-2026:22120", "modified": "2026-08-26T00:11:35.503374Z", "published": "2026-08-26T00:08:24.047074Z", "upstream": ["CVE-2026-33811", "CVE-2026-33814", "CVE-2026-39817", "CVE-2026-39819", "CVE-2026-39820", "CVE-2026-39823", "CVE-2026-39825", "CVE-2026-39826", "CVE-2026-39836", "CVE-2026-42499", "CVE-2026-42501"], "summary": "Important: golang security update", "details": "The golang packages provide the Go programming language compiler.\n\nSecurity Fix(es):\n\n* net/mail: golang: net/mail: Denial of Service via pathological email address parsing (CVE-2026-42499)\n\n* cmd/go: golang: Go command (cmd/go): Integrity bypass due to checksum validation flaw via malicious module proxy (CVE-2026-42501)\n\n* html/template: golang: Go html/template: Cross-Site Scripting via improper URL escaping in meta tag content (CVE-2026-39823)\n\n* cmd/go: golang: Go 'go bug' command: Arbitrary file overwrite via symlink attack (CVE-2026-39819)\n\n* net/http/internal/http2: golang: golang.org/x/net: Go HTTP/2: Denial of Service via malformed SETTINGS_MAX_FRAME_SIZE frame (CVE-2026-33814)\n\n* net/mail: golang: Go net/mail: Denial of Service via crafted email inputs (CVE-2026-39820)\n\n* net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811)\n\n* net/http/httputil: golang: net/http/httputil: ReverseProxy forwards hidden query parameters, potentially bypassing security controls (CVE-2026-39825)\n\n* cmd/go: golang: Go tool pack: Arbitrary file write via malicious archive extraction (CVE-2026-39817)\n\n* html/template: golang: html/template: Cross-site scripting due to incorrect script tag escaping (CVE-2026-39826)\n\n* net: golang: Go net package: Denial of Service via NUL byte in Dial and LookupPort on Windows (CVE-2026-39836)\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:10", "name": "golang", "purl": "pkg:rpm/rocky-linux/golang?distro=rocky-linux-10&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:1.26.3-4.el10_2"}], "database_specific": {"yum_repository": "AppStream"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:22120"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467813"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467825"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467811"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467820"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467823"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467815"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467810"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467809"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467822"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467826"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467827"}, {"type": "ADVISORY", "url": "https://access.redhat.com/errata/RHSA-2026:22120"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}], "database_specific": {"license": "CC-BY-4.0", "license_url": "https://creativecommons.org/licenses/by/4.0/", "source_advisory": "RHSA-2026:22120"}}