What is CVE-2019-20844?

CVE-2019-20844 is a medium-severity vulnerability in Mattermost Server, classified under Improper Enforcement of Message Integrity During Transmission in a Communication Channel. CVSS score: 6.5/10. Published 2020-06-19.

How severe is CVE-2019-20844?

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

Vulnerability in Mattermost Server

CVE-2019-20844

An issue was discovered in Mattermost Server before 5.18.0, 5.17.2, 5.16.4, 5.15.4, and 5.9.7. An attacker can spoof a direct-message channel by changing the type of a channel.

EPSS: 0.004 (35.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Mattermost Mattermost_server — versions 5.18.0
N/a — versions n/a

Weakness classification (CWE)

CWE-924 — Improper Enforcement of Message Integrity During Transmission in a Communication Channel

References

cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2019-20844?: CVE-2019-20844 is a medium-severity vulnerability in Mattermost Server, classified under Improper Enforcement of Message Integrity During Transmission in a Communication Channel. CVSS score: 6.5/10. Published 2020-06-19.
How severe is CVE-2019-20844?: Medium severity. CVSS v3 base score is 6.5 out of 10.