# CVE-2025-3643: Moodle has reflected Cross-site Scripting risk in policy tool

Source: https://junglewise.ai/threats/cve-2025-3643-moodle-has-reflected-cross-site-scripting-risk-in-policy-tool  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-04-25  
License: CC BY 4.0 with a link back

CVE-2025-3643 · Severity: low · CVSS 3.1 · Published 2025-04-25

Moodle has reflected Cross-site Scripting risk in policy tool

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

## Quick answers

**Is CVE-2025-3643 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-3643 being exploited in the wild.

**How severe is CVE-2025-3643?** Low severity, with a CVSS score of 3.1, published 25 April 2025.

**Which products and versions are affected?** moodle/moodle (Packagist) ECOSYSTEM:introduced=0,fixed=4.1.18.

**Is there a fix for CVE-2025-3643?** Yes. moodle/moodle (Packagist): upgrade to 4.1.18 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2025-3643?** Check whether you run moodle/moodle (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

- moodle/moodle (Packagist): upgrade to 4.1.18 or later

  ```sh
  composer require moodle/moodle:^4.1.18
  ```


## Affected products

- moodle/moodle (Packagist) ECOSYSTEM:introduced=0,fixed=4.1.18

## Identifiers

- CVE-2025-3643
- GHSA-hxgg-4qww-85ph

## Related threats

- [Moodle TeX formula editor is vulnerable to DoS through lack of execution time limits](https://junglewise.ai/threats/cve-2026-26047-moodle-tex-formula-editor-is-vulnerable-to-dos-through-lack-of)
- [Moodle has a Remote Code Execution risk via file restore](https://junglewise.ai/threats/cve-2026-26045-moodle-has-a-remote-code-execution-risk-via-file-restore)
- [Moodle Inserts Sensitive Information Into Sent Data](https://junglewise.ai/threats/cve-2025-67857-moodle-inserts-sensitive-information-into-sent-data)
- [Moodle Affected by Improper Restriction of Excessive Authentication Attempts](https://junglewise.ai/threats/cve-2025-67853-moodle-affected-by-improper-restriction-of-excessive)
- [Moodle Open Redirect vulnerability](https://junglewise.ai/threats/cve-2025-67852-moodle-open-redirect-vulnerability)