What is CVE-2016-11072?

CVE-2016-11072 is a medium-severity vulnerability in Mattermost Server, classified under Improper Authentication. CVSS score: 6.5/10. Published 2020-06-19.

How severe is CVE-2016-11072?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Mattermost Server

CVE-2016-11072

An issue was discovered in Mattermost Server before 3.0.2. The purposes of a session ID and a Session Token were mishandled.

Vulnerability class: Broken Authentication

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

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (52.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · 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-2016-11072?: CVE-2016-11072 is a medium-severity vulnerability in Mattermost Server, classified under Improper Authentication. CVSS score: 6.5/10. Published 2020-06-19.
How severe is CVE-2016-11072?: Medium severity. CVSS v3 base score is 6.5 out of 10.