CVE-2026-26045

Severity CVSS v4.0:

Pending analysis

Type:

CWE-94 Code Injection

Publication date:

21/02/2026

Last modified:

26/02/2026

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.20 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

7.20

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:moodle:moodle::::::::		4.5.9 (excluding)
cpe:2.3:a:moodle:moodle::::::::	5.0.0 (including)	5.0.5 (excluding)
cpe:2.3:a:moodle:moodle::::::::	5.1.0 (including)	5.1.2 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-26045

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools