{"id":"DEBIAN-CVE-2026-86776","details":"KeePass versions 2.35 through 2.61.1 fail to validate KDBX header field sizes before memory allocation in the ReadHeaderField function. Attackers can craft a malicious KDBX file declaring excessive header field lengths to trigger allocation of gigabytes of memory, causing the application to consume resources and terminate.","modified":"2026-09-11T09:02:56.293268610Z","published":"2026-09-09T10:22:33.970Z","upstream":["CVE-2026-86776"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-86776"}],"affected":[{"package":{"name":"keepass2","ecosystem":"Debian:12","purl":"pkg:deb/debian/keepass2?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.47+dfsg-2","2.57+dfsg-1","2.57+dfsg-1~bpo12+1","2.57+dfsg-2","2.57+dfsg-3","2.57+dfsg-4","2.60+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-86776.json"}},{"package":{"name":"keepass2","ecosystem":"Debian:13","purl":"pkg:deb/debian/keepass2?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.57+dfsg-3","2.57+dfsg-4","2.60+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-86776.json"}},{"package":{"name":"keepass2","ecosystem":"Debian:14","purl":"pkg:deb/debian/keepass2?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.57+dfsg-3","2.57+dfsg-4","2.60+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-86776.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}