# CVE-2021-33926: Server-Side Request Forgery in Plone CMS

Source: https://junglewise.ai/threats/cve-2021-33926-server-side-request-forgery-in-plone-cms  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-02-17  
License: CC BY 4.0 with a link back

CVE-2021-33926 · Severity: low · CVSS 3.1 · Published 2023-02-17

An issue in Plone CMS v. 5.2.4, 5.2.3, 5.2.2, 5.2.1, 5.2.0, 5.1rc2, 5.1rc1, 5.1b4, 5.1b3, 5.1b2, 5.1a2, 5.1a1, 5.1.7, 5.1.6, 5.1.5, 5.1.4, 5.1.2, 5.1.1 5.1, 5.0rc3, 5.0rc2, 5.0rc1, 5.0.9, 5.0.8, 5.0.7, 5.0.6, 5.0.5, 5.0.4, 5.0.3, 5.0.2, 5.0.10, 5.0.1, 5.0, 4.3.9, 4.3.8, 4.3.7, 4.3.6, 4.3.5, 4.3.4, 4.3.3, 4.3.20, 4 allows attacker to access sensitive information via the RSS feed protlet.

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

## Quick answers

**Is CVE-2021-33926 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2021-33926 being exploited in the wild.

**How severe is CVE-2021-33926?** Low severity, with a CVSS score of 3.1, published 17 February 2023.

**Which products and versions are affected?** plone (PyPI) ECOSYSTEM:introduced=4.3,fixed=5.2.5.

**Is there a fix for CVE-2021-33926?** 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-2021-33926?** 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=4.3,fixed=5.2.5

## Identifiers

- CVE-2021-33926
- GHSA-47p5-p3jw-w78w
- PYSEC-2023-289

## 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)