What is CVE-2017-8451?

CVE-2017-8451 is a medium-severity vulnerability in Elastic X-Pack Security, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2017-06-16.

How severe is CVE-2017-8451?

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

Open Redirect in Elastic X-Pack Security

CVE-2017-8451

With X-Pack installed, Kibana versions before 5.3.1 have an open redirect vulnerability on the login page that would enable an attacker to craft a link that redirects to an arbitrary website.

Vulnerability class: Open Redirect

Published 2017-06-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (59.4th percentile), scored 2026-10-23.

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

Affected products

Elastic X-Pack Security — versions before 5.3.1
Elastic Kibana

Weakness classification (CWE)

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

References

www.elastic.co/community/security (Vendor Advisory)

Frequently asked questions

What is CVE-2017-8451?: CVE-2017-8451 is a medium-severity vulnerability in Elastic X-Pack Security, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2017-06-16.
How severe is CVE-2017-8451?: Medium severity. CVSS v3 base score is 6.1 out of 10.