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

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). 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
    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

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