# CVE-2020-25911: XML External Entity vulnerability in MODX CMS

Source: https://junglewise.ai/threats/cve-2020-25911-xml-external-entity-vulnerability-in-modx-cms  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-11-01  
License: CC BY 4.0 with a link back

CVE-2020-25911 · Severity: low · CVSS 3.1 · Published 2021-11-01

XML External Entity vulnerability in MODX CMS

Technologies: [modx/revolution (Packagist)](https://junglewise.ai/threats/technologies/modx-revolution). Vendors: [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2020-25911 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2020-25911 being exploited in the wild.

**How severe is CVE-2020-25911?** Low severity, with a CVSS score of 3.1, published 1 November 2021.

**Which products and versions are affected?** modx/revolution (Packagist) ECOSYSTEM:introduced=0,fixed=2.8.0.

**Is there a fix for CVE-2020-25911?** Yes. modx/revolution (Packagist): upgrade to 2.8.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2020-25911?** Check whether you run modx/revolution (Packagist) 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

- modx/revolution (Packagist): upgrade to 2.8.0 or later

  ```sh
  composer require modx/revolution:^2.8.0
  ```


## Affected products

- modx/revolution (Packagist) ECOSYSTEM:introduced=0,fixed=2.8.0

## Identifiers

- CVE-2020-25911
- GHSA-vhfp-9wvj-gwvg

## Related threats

- [MODX allows cross-site scripting (XSS) via an SVG file](https://junglewise.ai/threats/cve-2025-28010-modx-allows-cross-site-scripting-xss-via-an-svg-file)
- [MODX Revolution XSS via HTTP Host header](https://junglewise.ai/threats/cve-2017-9071-modx-revolution-xss-via-http-host-header)
- [MODX Revolution Reflected XSS](https://junglewise.ai/threats/cve-2017-9068-modx-revolution-reflected-xss)
- [MODX Revolution allows overwriting .htaccess](https://junglewise.ai/threats/cve-2017-9069-modx-revolution-allows-overwriting-htaccess)
- [MODX Revolution cross-site scripting vulnerability](https://junglewise.ai/threats/cve-2017-9070-modx-revolution-cross-site-scripting-vulnerability)