{"schema_version": "1.7.0", "id": "RLSA-2026:98564", "modified": "2026-11-13T12:07:23.079176Z", "published": "2026-11-13T12:06:37.188502Z", "upstream": ["CVE-2026-88806"], "summary": "Important: libX11 security update", "details": "The libX11 packages contain the core X11 protocol client library.\n\nSecurity Fix(es):\n\n* libX11: libX11: Heap-based buffer overflow via malicious X server (CVE-2026-88806)\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:H/PR:N/UI:R/S:U/C:H/I:H/A:H"}], "affected": [{"package": {"ecosystem": "Rocky Linux:10", "name": "libX11-debugsource", "purl": "pkg:rpm/rocky-linux/libX11-debugsource?distro=rocky-linux-10&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:1.8.13-1.el10_3.1"}], "database_specific": {"yum_repository": 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