Auth bypass in Mattermost Mattermost_server

CVE-2017-18908

An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2. A password-reset request was sometime sent to an attacker-provided e-mail address.

Vulnerability class: Broken Authentication

EPSS: 0.012 (64.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2017-18908?
CVE-2017-18908 is a critical-severity vulnerability in Mattermost Mattermost_server, classified under Improper Authentication. CVSS score: 9.8/10. Published 2020-06-19.
How severe is CVE-2017-18908?
Critical severity. CVSS v3 base score is 9.8 out of 10.