Moodle allows reflected XSS via question bank filter

MEDIUM 6.1CVE-2025-26530 · BIT-moodle-2025-26530 · GHSA-4w32-c9g7-27qx · Published 24/02/2025 · updated 17/06/2026

In short

CVE-2025-26530 is a MEDIUM (CVSS 6.1) vulnerability affecting moodle/moodle, moodle (moodle).
Chance of exploitation in the next 30 days (EPSS): 0.36%, higher than 29.9% of all vulnerabilities.
Fix: update to 4.3.10, 4.4.6, 4.5.2 or later.

Package	Affected versions	Patched versions
moodle/moodle Packagist	`≥ 4.3.0-beta, < 4.3.10≥ 4.4.0-beta, < 4.4.6≥ 4.5.0-beta, < 4.5.2`	`4.3.104.4.64.5.2`
moodle moodle	`≥ 4.3.0, < 4.3.10≥ 4.4.0, < 4.4.6≥ 4.5.0, < 4.5.2`	`4.3.104.4.64.5.2`

The question bank filter required additional sanitizing to prevent a reflected XSS risk.

NVD description

The question bank filter required additional sanitizing to prevent a reflected XSS risk.

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Package

Affected versions

Patched versions

Packagist

≥ 4.3.0-beta, < 4.3.10≥ 4.4.0-beta, < 4.4.6≥ 4.5.0-beta, < 4.5.2

4.3.104.4.64.5.2

≥ 4.3.0, < 4.3.10≥ 4.4.0, < 4.4.6≥ 4.5.0, < 4.5.2

4.3.104.4.64.5.2

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