CVE-2026-26045
High
Description
A flaw was identified in Moodle’s backup restore functionality where specially crafted backup files were not properly validated during processing. If a malicious backup file is restored, it could lead to unintended execution of server-side code. Since restore capabilities are typically available to privileged users, exploitation requires authenticated access. Successful exploitation could result in full compromise of the Moodle server.
SeverityHigh
CVSS7.2
Exploit probability—
Product
Moodle
PublishedFeb 21, 2026
First seenFeb 21, 2026
Weakness typeCWE-94Code injection
How to fix
Update
- moodle moodle4.5.9, 5.0.5, 5.1.2 or later
- moodle/moodle5.1.2, 5.0.5, 4.5.9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| moodle moodle | v < 4.5.9, 5.0.0 ≤ v < 5.0.5, 5.1.0 ≤ v < 5.1.2 | 4.5.9, 5.0.5, 5.1.2 |
| moodle/moodlePackagist | 5.1.0-beta ≤ v < 5.1.2, 5.0.0-beta ≤ v < 5.0.5, v < 4.5.9 | 5.1.2, 5.0.5, 4.5.9 |
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