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).
https://mail.python.org/archives/list/[email protected]/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/
https://bugs.launchpad.net/mailman/+bug/1947640
Source: MITRE
Published: 2021-10-21
Updated: 2021-11-05
Type: CWE-352
Base Score: 8.5
Vector: AV:N/AC:M/Au:S/C:C/I:C/A:C
Impact Score: 10
Exploitability Score: 6.8
Severity: HIGH
Base Score: 8
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 2.1
Severity: HIGH