An issue was discovered in views/list.py in GNU Mailman Postorius before 1.3.5. An attacker (logged into any account) can send a crafted POST request to unsubscribe any user from a mailing list, also revealing whether that address was subscribed in the first place.
{
    "nvd_published_at": "2021-09-10T19:15:00Z",
    "severity": "MODERATE",
    "github_reviewed_at": "2024-04-22T22:50:22Z",
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-284"
    ]
}