CVE-2021-42097

HIGH

GNU Mailman < 2.1.35 - Cross-Site Request Forgery via Shared csrf_token

Title source: llm
STIX 2.1

Description

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).

References (4)

Core 4
Core References
Patch, Third Party Advisory x_refsource_confirm
https://bugs.launchpad.net/mailman/+bug/1947640
Mailing List, Patch, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2021/10/21/4
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2021/dsa-4991

Scores

CVSS v3 8.0
EPSS 0.0061
EPSS Percentile 70.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-352
Status published
Products (2)
debian/debian_linux 10.0
gnu/mailman < 2.1.35
Published Oct 21, 2021
Tracked Since Feb 18, 2026