Note that an image tag with an SVG image as source is never vulnerable, even when the SVG image contains malicious code. To exploit the vulnerability, an attacker would first need to upload an image, and then trick a user into following a specially crafted link.

All versions of Zope are impacted on sites that allow untrusted users to upload images.

### Patches
Patches will be released in Zope 4.8.10 and 5.8.5.

### Workarounds
Make sure the "Add Documents, Images, and Files" permission is only assigned to trusted roles. By default only the Manager has this permission.

Affected Packages

PyPI Zope

Affected versions: 0 (fixed in 4.8.10)

PyPI Zope

Affected versions: 5.8.0 (fixed in 5.8.5)

Related CVEs

CVE-2023-42458

Key Information

GHSA ID

GHSA-wm8q-9975-xh5v

Published

September 21, 2023 5:04 PM

Last Modified

September 21, 2023 5:05 PM

CVSS Score

2.5 /10

Primary Ecosystem

PyPI

Primary Package

Zope

GitHub Reviewed

✓ Yes

Dataset

Last updated: July 13, 2025 6:28 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.