---
id: CVE-2022-23599
aliases:
  - GHSA-g4c2-ghfg-g5rh
  - PYSEC-2022-21
title: Cross-site Scripting and Open Redirect in Products.ATContentTypes
summary: Cross-site Scripting and Open Redirect in Products.ATContentTypes
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N'
vendor: products-atcontenttypes
product: products-atcontenttypes
ecosystem: pip
affected:
  - products-atcontenttypes < 3.0.6
patched:
  - products-atcontenttypes 3.0.6
published: '2022-01-28'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:49:27.764192817Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-g4c2-ghfg-g5rh'
references:
  - url: >-
      https://github.com/plone/Products.ATContentTypes/security/advisories/GHSA-g4c2-ghfg-g5rh
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2022-23599'
  - url: >-
      https://github.com/plone/Products.ATContentTypes/commit/fc793f88f35a15a68b52e4abed77af0da5fdbab8
  - url: 'https://github.com/plone/Products.ATContentTypes'
  - url: >-
      https://github.com/pypa/advisory-database/tree/main/vulns/products-atcontenttypes/PYSEC-2022-21.yaml
tags:
  - osv
  - pip
epss: 0.0075
epssPercentile: 0.53488
ingestedAt: '2026-09-12T03:13:01.694Z'
---

## Overview

### Impact
Plone is vulnerable to reflected cross site scripting and open redirect when an attacker can get a compromised version of the image_view_fullscreen page in a cache, for example in Varnish.
The technique is known as cache poisoning.
Any later visitor can get redirected when clicking on a link on this page.
Usually only anonymous users are affected, but this depends on your cache settings.

### Patches
A new version 3.0.6 of Products.ATContentTypes has been released with a fix.
This version works on Plone 5.2 (Python 2 only) and will be included in Plone 5.2.7.

Note that the Products.CMFPlone package has the same problem in the 4.3 series.
`plone.app.contenttypes` has the same problem in all versions, see [advisory](https://github.com/plone/plone.app.contenttypes/security/advisories/GHSA-f7qw-5fgj-247x).
For all unpatched versions of the three packages, you can use the following workaround.

### Workaround
Make sure the image_view_fullscreen page is not stored in the cache.
In Plone:

* Login as Manager and go to Site Setup.
* Go to the 'Caching' control panel. If this does not exist, or 'Enable caching' is not checked, you should normally not be vulnerable.
* Click on the tab 'Caching operations'.
* Under 'Legacy template mappings' locate the ruleset 'Content item view'.
* From the last column ('Templates')  remove 'image_view_fullscreen'.
* Click on Save.

### Reporter
This vulnerability was responsibly disclosed to the Plone Security Team by Gustav Hansen, F-Secure Consulting. Thank you!

### For more information
If you have any questions or comments about this advisory, email us at [security@plone.org](mailto:security@plone.org)
This is also the correct address to use when you want to report a possible vulnerability.
See [our security report policy](https://plone.org/security/report).

## Affected packages

- `products-atcontenttypes < 3.0.6`

## Remediation

Upgrade to a patched release:

- `products-atcontenttypes 3.0.6`