# CVE-2021-35959: Plone has stored XSS in folder contents

Source: https://junglewise.ai/threats/cve-2021-35959-plone-has-stored-xss-in-folder-contents  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-06-30  
License: CC BY 4.0 with a link back

CVE-2021-35959 · Severity: low · CVSS 3.1 · Published 2021-06-30

In Plone 5.0 through 5.2.4, Editors are vulnerable to XSS in the folder contents view, if a Contributor has created a folder with a SCRIPT tag in the description field.

Technologies: [plone (PyPI)](https://junglewise.ai/threats/technologies/pypi-plone). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2021-35959 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2021-35959 being exploited in the wild.

**How severe is CVE-2021-35959?** Low severity, with a CVSS score of 3.1, published 30 June 2021.

**Which products and versions are affected?** plone (PyPI) ECOSYSTEM:introduced=5.0,fixed=5.2.5, ECOSYSTEM:introduced=5.0,last_affected=5.2.4.

**Is there a fix for CVE-2021-35959?** Yes. plone (PyPI): upgrade to 5.2.5 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2021-35959?** Check whether you run plone (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

- plone (PyPI): upgrade to 5.2.5 or later

  ```sh
  pip install "plone>=5.2.5"
  ```


## Affected products

- plone (PyPI) ECOSYSTEM:introduced=5.0,fixed=5.2.5, ECOSYSTEM:introduced=5.0,last_affected=5.2.4

## Identifiers

- CVE-2021-35959
- GHSA-qfhw-fv3g-v836
- PYSEC-2021-110

## Related threats

- [PYSEC-2026-2889 - Plone Privilege Escallation](https://junglewise.ai/threats/cve-2020-7938-plone-privilege-escallation)
- [PYSEC-2026-2964 - Plone unauthorized member addition vulnerability](https://junglewise.ai/threats/cve-2015-7315-plone-unauthorized-member-addition-vulnerability)
- [PYSEC-2026-2962 - Products.CMFPlone XSS in profile home_page property](https://junglewise.ai/threats/cve-2017-1000482-products-cmfplone-xss-in-profile-home-page-property)
- [PYSEC-2026-2963 - Products.CMFPlone Open Redirect Vulnerability](https://junglewise.ai/threats/cve-2017-1000481-products-cmfplone-open-redirect-vulnerability)
- [PYSEC-2026-2967 - Cross-site scripting in Products.CMFCore, Products.PluggableAuthService, Plone](https://junglewise.ai/threats/cve-2021-33507-plone-reflected-cross-site-scripting-vulnerability)