What is CVE-2017-18897?

CVE-2017-18897 is a medium-severity vulnerability in Mattermost Server, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2020-06-19.

How severe is CVE-2017-18897?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Open Redirect in Mattermost Server

CVE-2017-18897

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5, when used as an OAuth 2.0 service provider. It mishandles a deny action for a redirection.

Vulnerability class: Open Redirect

EPSS: 0.007 (48.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Mattermost Mattermost_server — versions 4.2.0
N/a — versions n/a

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2017-18897?: CVE-2017-18897 is a medium-severity vulnerability in Mattermost Server, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2020-06-19.
How severe is CVE-2017-18897?: Medium severity. CVSS v3 base score is 6.1 out of 10.