{"schema_version": "1.7.0", "id": "RLSA-2026:26205", "modified": "2026-06-17T12:05:48.685405Z", "published": "2026-06-17T12:03:08.073041Z", "upstream": ["CVE-2026-43964"], "summary": "Important: postfix security update", "details": "The postfix packages provide a Mail Transport Agent (MTA), which supports protocols like LDAP, SMTP AUTH (SASL), and TLS.\n\nSecurity Fix(es):\n\n* postfix: buffer over-read via malformed enhanced status code (CVE-2026-43964)\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:9", "name": "postfix", "purl": "pkg:rpm/rocky-linux/postfix?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:3.5.25-3.el9_8"}], "database_specific": {"yum_repository": "AppStream"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:26205"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2466488"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}]}