{"schema_version": "1.7.0", "id": "RLSA-2026:21755", "modified": "2026-06-05T00:05:36.804704Z", "published": "2026-06-05T00:03:04.540592Z", "upstream": ["CVE-2026-34078", "CVE-2026-34079"], "summary": "Important: flatpak security update", "details": "Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux.\n\nSecurity Fix(es):\n\n* flatpak: Flatpak: Arbitrary code execution via crafted symlinks in sandbox-expose options (CVE-2026-34078)\n\n* flatpak: Flatpak: Arbitrary file deletion on host via improper cache file path validation (CVE-2026-34079)\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:L/UI:R/S:C/C:H/I:H/A:H"}], "affected": [{"package": {"ecosystem": "Rocky Linux:9", "name": "flatpak", "purl": "pkg:rpm/rocky-linux/flatpak?distro=rocky-linux-9&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:1.12.9-4.el9_8.1"}], "database_specific": {"yum_repository": "AppStream"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:21755"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456276"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456284"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}]}