CVE-2023-42458: PYSEC-2026-2077 - Zope vulnerable to Stored Cross Site Scripting with SVG images

CVE-2023-42458 · Severity: low · CVSS 3.1 · Published 2026-07-07

Zope vulnerable to Stored Cross Site Scripting with SVG images

Technologies: Zope (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2023-42458 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2023-42458 being exploited in the wild.
How severe is CVE-2023-42458?
Low severity, with a CVSS score of 3.1, published 7 July 2026.
Which products and versions are affected?
Zope (PyPI) ECOSYSTEM:introduced=0,fixed=4.8.10, ECOSYSTEM:introduced=0,fixed=4.8.10,introduced=5.8.0,fixed=5.8.5.
Is there a fix for CVE-2023-42458?
Yes. Zope (PyPI): upgrade to 4.8.10, 5.8.5 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2023-42458?
Check whether you run Zope (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

  • Zope (PyPI): upgrade to 4.8.10, 5.8.5 or later
    pip install "Zope>=5.8.5"

Affected products

  • Zope (PyPI) ECOSYSTEM:introduced=0,fixed=4.8.10, ECOSYSTEM:introduced=0,fixed=4.8.10,introduced=5.8.0,fixed=5.8.5

Identifiers

  • CVE-2023-42458
  • GHSA-wm8q-9975-xh5v
  • PYSEC-2026-2077

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