What is CVE-2016-11074?

CVE-2016-11074 is a critical-severity vulnerability in Mattermost Server, classified under Improper Authentication. CVSS score: 9.8/10. Published 2020-06-19.

How severe is CVE-2016-11074?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Mattermost Server

CVE-2016-11074

An issue was discovered in Mattermost Server before 3.0.0. A password-reset link could be reused.

Vulnerability class: Broken Authentication

Published 2020-06-19 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.012 (66.6th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: +0.000

Affected products

Mattermost Server

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

mattermost.com/security-updates/ (Vendor Advisory)

Frequently asked questions

What is CVE-2016-11074?: CVE-2016-11074 is a critical-severity vulnerability in Mattermost Server, classified under Improper Authentication. CVSS score: 9.8/10. Published 2020-06-19.
How severe is CVE-2016-11074?: Critical severity. CVSS v3 base score is 9.8 out of 10.