TI-2021-14751 Aliases CVE-2021-36403 GHSA-j9cw-5cpj-9qj5

In Moodle, in some circumstances, email notifications of messages could have the link…

LOW 31CWE-912Published 2023-03-06 · Updated 2025-03-07

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub.

Summary

In Moodle, in some circumstances, email notifications of messages could have the link back to the original message hidden by HTML, which may pose a phishing risk.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00526 44th percentileScored 2026-11-07

Fix Fixed moodle/moodle (Packagist): 3.11.1, 3.10.5, 3.9.8

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

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	3.11, 3.10 to 3.10.4, 3.9 to 3.9.7 and earlier unsupported versions	—	No fix listed	CNA
—	moodle/moodle (Packagist)	3.11.0-beta to before 3.11.1	3.11.1	Patch available	GHSA-j9cw-5cpj-9qj5
—	moodle/moodle (Packagist)	3.10.0-beta to before 3.10.5	3.10.5	Patch available	GHSA-j9cw-5cpj-9qj5
—	moodle/moodle (Packagist)	before 3.9.8	3.9.8	Patch available	GHSA-j9cw-5cpj-9qj5

Moodle Vendor— Affected 3.11, 3.10 to 3.10.4, 3.9 to 3.9.7 and earlier unsupported versions Fixed in — No fix listed CNA
moodle/moodle (Packagist) Vendor— Affected 3.11.0-beta to before 3.11.1 Fixed in 3.11.1 Patch available GHSA-j9cw-5cpj-9qj5
moodle/moodle (Packagist) Vendor— Affected 3.10.0-beta to before 3.10.5 Fixed in 3.10.5 Patch available GHSA-j9cw-5cpj-9qj5
moodle/moodle (Packagist) Vendor— Affected before 3.9.8 Fixed in 3.9.8 Patch available GHSA-j9cw-5cpj-9qj5

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:moodle:moodle::::::::	before 3.9.8; 3.10.0 to before 3.10.5; 3.11.0 to before 3.11.1	Vulnerable	Moodle

cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* Versions before 3.9.8; 3.10.0 to before 3.10.5; 3.11.0 to before 3.11.1 Vulnerable ·Moodle

Remediation

Fix · GHSA-j9cw-5cpj-9qj5 moodle/moodle (Packagist) Fixed in 3.11.1 Advisory →
Fix · GHSA-j9cw-5cpj-9qj5 moodle/moodle (Packagist) Fixed in 3.10.5 Advisory →
Fix · GHSA-j9cw-5cpj-9qj5 moodle/moodle (Packagist) Fixed in 3.9.8 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2021-36403
2026-10-03 Alias added: GHSA-j9cw-5cpj-9qj5

References

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

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