{"id":"CVE-2021-42097","details":"GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A csrf_token value is not specific to a single user account. An attacker can obtain a value within the context of an unprivileged user account, and then use that value in a CSRF attack against an admin (e.g., for account takeover).","modified":"2026-05-04T08:37:58.536696Z","published":"2021-10-21T01:15:06.940Z","withdrawn":"2026-05-04T08:37:58.536696Z","related":["ALSA-2021:4826","openSUSE-SU-2021:1436-1","openSUSE-SU-2021:1452-1"],"references":[{"type":"WEB","url":"https://mail.python.org/archives/list/mailman-announce%40python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4991"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2021/10/21/4"},{"type":"FIX","url":"https://bugs.launchpad.net/mailman/+bug/1947640"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-42097.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"2.1.35"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]},{"events":[{"introduced":"0"},{"fixed":"2.1.35"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"}]}