TI-2026-21050 Aliases CVE-2026-26045 GHSA-ggxq-2mg9-8966

Moodle: moodle: improper validation in file restore functionality leading to remote code execution

LOW 35CWE-94Published 2026-02-21 · Updated 2026-02-26

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-94.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00642 51st percentileScored 2026-11-07

Fix Fixed moodle: 4.5.9, 5.0.5, 5.1.2moodle/moodle (Packagist): 5.1.2, 5.0.5, 4.5.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	moodle	before 4.5.9; 5.0.0 to before 5.0.5; 5.1.0 to before 5.1.2	4.5.9, 5.0.5, 5.1.2	Patch available	CNA
—	moodle/moodle (Packagist)	5.1.0-beta to before 5.1.2	5.1.2	Patch available	GHSA-ggxq-2mg9-8966
—	moodle/moodle (Packagist)	5.0.0-beta to before 5.0.5	5.0.5	Patch available	GHSA-ggxq-2mg9-8966
—	moodle/moodle (Packagist)	before 4.5.9	4.5.9	Patch available	GHSA-ggxq-2mg9-8966

moodle Vendor— Affected before 4.5.9; 5.0.0 to before 5.0.5; 5.1.0 to before 5.1.2 Fixed in 4.5.9, 5.0.5, 5.1.2 Patch available CNA
moodle/moodle (Packagist) Vendor— Affected 5.1.0-beta to before 5.1.2 Fixed in 5.1.2 Patch available GHSA-ggxq-2mg9-8966
moodle/moodle (Packagist) Vendor— Affected 5.0.0-beta to before 5.0.5 Fixed in 5.0.5 Patch available GHSA-ggxq-2mg9-8966
moodle/moodle (Packagist) Vendor— Affected before 4.5.9 Fixed in 4.5.9 Patch available GHSA-ggxq-2mg9-8966

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:moodle:moodle::::::::	before 4.5.9; 5.0.0 to before 5.0.5; 5.1.0 to before 5.1.2	Vulnerable	Moodle

cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* Versions before 4.5.9; 5.0.0 to before 5.0.5; 5.1.0 to before 5.1.2 Vulnerable ·Moodle

Remediation

Fix · CNA moodle Fixed in 4.5.9, 5.0.5, 5.1.2
Fix · GHSA-ggxq-2mg9-8966 moodle/moodle (Packagist) Fixed in 5.1.2 Advisory →
Fix · GHSA-ggxq-2mg9-8966 moodle/moodle (Packagist) Fixed in 5.0.5 Advisory →
Fix · GHSA-ggxq-2mg9-8966 moodle/moodle (Packagist) Fixed in 4.5.9 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2026-26045
2026-10-03 Alias added: GHSA-ggxq-2mg9-8966

References

Advisory 3

Other 3

TI-2024-22468 moodle: unsafe direct use of $_SERVER['HTTP_REFERER'] in admin/tool/mfa/index.php CVSS 3.1CRITICAL 9.8
TI-2021-14741 In Moodle, an SQL injection risk was identified in the library fetching a user's recent courses. CVSS 3.1CRITICAL 9.8
TI-2024-29071 Moodle: remote code execution via calculated question types CVSS 3.1HIGH 8.1
TI-2016-06653 Moodle 3.1.2 allows remote attackers to obtain sensitive information via unspecified… CVSS 3.1HIGH 7.5
TI-2022-00259 SQL injection in moodle CVSS 3.1CRITICAL 9.8
TI-2022-16116 Path traversal in Moodle CVSS 3.1HIGH 7.5

See all 636 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences