Privilege escalation in Mattermost Server

CVE-2019-20886

An issue was discovered in Mattermost Server before 5.8.0. The first user is sometimes inadvertently a system admin.

Vulnerability class: Privilege Escalation

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.009 (57.8th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2019-20886: held from 0.009 to 0.009.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2019-20886?
CVE-2019-20886 is a high-severity vulnerability in Mattermost Server, classified under Improper Privilege Management. CVSS score: 7.5/10. Published 2020-06-19.
How severe is CVE-2019-20886?
High severity. CVSS v3 base score is 7.5 out of 10.