CVE-2017-7400: PYSEC-2026-821 - OpenStack Horizon Cross-site Scripting (XSS)

CVE-2017-7400 · Severity: low · CVSS 3 · Published 2026-07-06

OpenStack Horizon Cross-site Scripting (XSS)

Technologies: horizon (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2017-7400 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2017-7400 being exploited in the wild.
How severe is CVE-2017-7400?
Low severity, with a CVSS score of 3, published 6 July 2026.
Which products and versions are affected?
horizon (PyPI) ECOSYSTEM:introduced=9.0,fixed=9.1.2, ECOSYSTEM:introduced=9.0,fixed=9.1.2,introduced=10.0,fixed=10.0.3,introduced=11.0.0,fixed=11.0.1.
Is there a fix for CVE-2017-7400?
Yes. horizon (PyPI): upgrade to 11.0.1, 9.1.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2017-7400?
Check whether you run horizon (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • horizon (PyPI): upgrade to 11.0.1, 9.1.2 or later
    pip install "horizon>=11.0.1"

Affected products

  • horizon (PyPI) ECOSYSTEM:introduced=9.0,fixed=9.1.2, ECOSYSTEM:introduced=9.0,fixed=9.1.2,introduced=10.0,fixed=10.0.3,introduced=11.0.0,fixed=11.0.1

Identifiers

  • CVE-2017-7400
  • GHSA-47vp-44v9-rhgq
  • PYSEC-2026-821

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