CVE-2026-26045

EUVD-2026-7390

21.02.2026, 06:16

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.

Code Injection

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	7.2 HIGH	NETWORK	LOW	HIGH	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Affected Products (NVD)

Vendor	Product	Version
moodle	moodle	𝑥 < 4.5.9
moodle	moodle	5.0.0 ≤ 𝑥 < 5.0.5
moodle	moodle	5.1.0 ≤ 𝑥 < 5.1.2

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-94 - Improper Control of Generation of Code ('Code Injection')
The software constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

References

https://access.redhat.com/security/cve/CVE-2026-26045

https://bugzilla.redhat.com/show_bug.cgi?id=2440901