{"schema_version": "1.7.0", "id": "RLSA-2026:67909", "modified": "2026-09-17T12:13:59.592793Z", "published": "2026-09-17T12:09:45.694481Z", "upstream": ["CVE-2026-63379", "CVE-2026-63381", "CVE-2026-63382", "CVE-2026-63383", "CVE-2026-63384", "CVE-2026-63385", "CVE-2026-63387", "CVE-2026-63388"], "summary": "Important: libevent security update", "details": "The libevent packages provide an abstract asynchronous event notification library.\n\nSecurity Fix(es):\n\n* libevent: Libevent: Denial of Service via malformed RPC data (CVE-2026-63383)\n\n* libevent: Libevent: Off-by-one stack buffer overflow leading to denial of service or data corruption (CVE-2026-63387)\n\n* libevent: Libevent: Memory corruption due to use-after-free (CVE-2026-63381)\n\n* libevent: Libevent: Denial of Service via integer conversion error in `evtag_unmarshal_header` (CVE-2026-63384)\n\n* libevent evhttp: Multiple HTTP Parser Bugs Enable Request Smuggling (CVE-2026-63382)\n\n* libevent: Libevent: Arbitrary code execution via heap out-of-bounds write in AF_UNIX handling (CVE-2026-63388)\n\n* libevent: Libevent: HTTP header handling bugs create risk of access control bypass. (CVE-2026-63385)\n\n* libevent: Libevent: HTTP header smuggling allows authorization bypass or cache poisoning (CVE-2026-63379)\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:L/I:L/A:H"}], "affected": [{"package": {"ecosystem": "Rocky Linux:10", "name": "libevent", "purl": "pkg:rpm/rocky-linux/libevent?distro=rocky-linux-10&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:2.1.13-1.el10_2"}], "database_specific": {"yum_repository": "BaseOS"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:67909"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520654"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520655"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520657"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520658"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520660"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520661"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520666"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520667"}, {"type": "ADVISORY", "url": "https://access.redhat.com/errata/RHSA-2026:67909"}], "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-2026:67909"}}