Vulnerability in Mattermost Server

CVE-2019-20863

An issue was discovered in Mattermost Server before 5.13.0. Incoming webhook creation is not properly restricted.

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 (59.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.4% 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-2019-20863: held from 0.009 to 0.009.

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

Affected products

References

Frequently asked questions

What is CVE-2019-20863?
CVE-2019-20863 is a high-severity vulnerability in Mattermost Server. CVSS score: 7.5/10. Published 2020-06-19.
How severe is CVE-2019-20863?
High severity. CVSS v3 base score is 7.5 out of 10.