What is CVE-2017-7400?

CVE-2017-7400 is a medium-severity vulnerability in OpenStack Horizon, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2017-04-03.

How severe is CVE-2017-7400?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in OpenStack Horizon

CVE-2017-7400

OpenStack Horizon 9.x through 9.1.1, 10.x through 10.0.2, and 11.0.0 allows remote authenticated administrators to conduct XSS attacks via a crafted federation mapping.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2017-04-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.011 (64.0th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

OpenStack Horizon — versions 9.0.0, 9.0.1, 9.1.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.securityfocus.com/bid/97324 (VDB Entry, Third Party Advisory, vdb-entry)
launchpad.net/bugs/1667086
access.redhat.com/errata/RHSA-2017:1598 (vendor-advisory)
access.redhat.com/errata/RHSA-2017:1739 (vendor-advisory)

Frequently asked questions

What is CVE-2017-7400?: CVE-2017-7400 is a medium-severity vulnerability in OpenStack Horizon, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2017-04-03.
How severe is CVE-2017-7400?: Medium severity. CVSS v3 base score is 4.8 out of 10.