CVE-2021-40347

medium

Description

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.

References

Advisories
More

https://www.debian.org/security/2021/dsa-4970

https://gitlab.com/mailman/postorius/-/tags

https://gitlab.com/mailman/postorius/-/commit/3d880c56b58bc26b32eac0799407d74b64b7474b

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=993746

https://phabricator.wikimedia.org/T289798

https://gitlab.com/mailman/postorius/-/issues/531

Details

Source: Mitre, NVD

Published: 2021-09-10

Updated: 2024-11-21

Risk Information

CVSS v2

Base Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.4

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Severity: Medium

CVSS v4

Base Score: 5.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00481