{"id":"CVE-2019-20394","details":"A double-free is present in libyang before v1.0-r3 in the function yyparse() when a type statement in used in a notification statement. Applications that use libyang to parse untrusted input yang files may be vulnerable to this flaw, which would cause a crash or potentially code execution.","modified":"2026-05-17T11:54:16.638456775Z","published":"2020-01-22T22:15:10.330Z","database_specific":{},"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html"},{"type":"ADVISORY","url":"https://github.com/CESNET/libyang/compare/v1.0-r2...v1.0-r3"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1793932"},{"type":"FIX","url":"https://github.com/CESNET/libyang/commit/6cc51b1757dfbb7cff92de074ada65e8523289a6"},{"type":"EVIDENCE","url":"https://github.com/CESNET/libyang/issues/769"}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}