CVE-2025-67851: Moodle

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

A flaw was found in moodle. This formula injection vulnerability occurs when data fields are exported without proper escaping. A remote attacker could exploit this by providing malicious data that, when exported and opened in a spreadsheet, allows arbitrary formulas to execute. This can lead to compromised data integrity and unintended operations within the spreadsheet.

Affected products

• Moodle Moodle: before 4.1.22 (fixed in 4.1.22); from 4.4.0, before 4.4.11 (fixed in 4.4.11); from 4.5.0, before 4.5.8 (fixed in 4.5.8); from 5.0.0, before 5.0.4 (fixed in 5.0.4); version 5.1.0 only

Published 2026-02-03. Last modified 2026-06-17.