CVE-2016-4428: PYSEC-2026-643 - OpenStack Dashboard (Horizon) Cross-site scripting (XSS) vulnerability

CVE-2016-4428 · Severity: low · CVSS 3.1 · Published 2026-07-02

OpenStack Dashboard (Horizon) Cross-site scripting (XSS) vulnerability

Technologies: horizon (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2016-4428 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2016-4428 being exploited in the wild.
How severe is CVE-2016-4428?
Low severity, with a CVSS score of 3.1, published 2 July 2026.
Which products and versions are affected?
horizon (PyPI) ECOSYSTEM:introduced=0,fixed=8.0.2, ECOSYSTEM:introduced=0,fixed=8.0.2,introduced=9.0.0,fixed=9.1.0.
Is there a fix for CVE-2016-4428?
Yes. horizon (PyPI): upgrade to 8.0.2, 9.1.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2016-4428?
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 8.0.2, 9.1.0 or later
    pip install "horizon>=9.1.0"

Affected products

  • horizon (PyPI) ECOSYSTEM:introduced=0,fixed=8.0.2, ECOSYSTEM:introduced=0,fixed=8.0.2,introduced=9.0.0,fixed=9.1.0

Identifiers

  • CVE-2016-4428
  • GHSA-grm6-x6mr-q3cv
  • PYSEC-2026-643

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