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GHSA-6mmv-f6c6-v6q8high7.3

Moodle vulnerable to Cross-site Scripting

Impact

A flaw was found in Moodle. This vulnerability, known as Cross-site Scripting (XSS), occurs due to insufficient checks on user-provided data in the formula editor's arithmetic expression fields. A remote attacker could inject malicious code into these fields. When other users view these expressions, the malicious code would execute in their web browsers, potentially compromising their data or leading to unauthorized actions.

Source excerpt · OSV

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

moodle/moodle Packagist
Affected rangeRecorded fix
Earlier releases before 4.1.22Ecosystem versions4.1.22
From 4.4.0-beta before 4.4.12Ecosystem versions4.4.12
From 4.5.0-beta before 4.5.8Ecosystem versions4.5.8
From 5.0.0-beta before 5.0.4Ecosystem versions5.0.4
From 5.1.0-beta before 5.1.1Ecosystem versions5.1.1

Version evidence: OSV · GHSA-6mmv-f6c6-v6q8

View original version evidence (392 explicit versions)

Original source description

A flaw was found in Moodle. This vulnerability, known as Cross-site Scripting (XSS), occurs due to insufficient checks on user-provided data in the formula editor's arithmetic expression fields. A remote attacker could inject malicious code into these fields. When other users view these expressions, the malicious code would execute in their web browsers, potentially compromising their data or leading to unauthorized actions.

References