{"id":"CVE-2017-18205","details":"In builtin.c in zsh before 5.4, when sh compatibility mode is used, there is a NULL pointer dereference during processing of the cd command with no argument if HOME is not set.","modified":"2026-04-16T01:41:56.162764191Z","published":"2018-02-27T22:29:00.480Z","related":["SUSE-SU-2018:1072-1","SUSE-SU-2022:14910-1"],"references":[{"type":"WEB","url":"https://usn.ubuntu.com/3593-1/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:3073"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/201805-10"},{"type":"FIX","url":"https://sourceforge.net/p/zsh/code/ci/eb783754bdb74377f3cea4ceca9c23a02ea1bf58"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"5.4"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2017-18205.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}