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TI-2023-09719 Aliases CVE-2023-23921GHSA-97qf-pq7x-964m

Moodle: reflected xss risk in some returnurl parameters

Priority LOW 29CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

The vulnerability was found Moodle which exists due to insufficient sanitization of user-supplied data in some returnurl parameters. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website. This flaw allows a remote attacker to perform cross-site scripting (XSS) attacks.

Why it matters now

EPSS 0.00815 57th percentileScored 2026-11-07
Fix Fixed moodle: 4.1.1, 4.0.6, 3.11.12 +1moodle/moodle (Packagist): 3.9.19, 3.11.12, 4.0.6 +1

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—moodle4.1.0 to before 4.1.1; 4.0.0 to before 4.0.6; 3.11.0 to before 3.11.12; before 3.9.194.1.1, 4.0.6, 3.11.12, 3.9.19Patch availableCNA
—moodle/moodle (Packagist)before 3.9.193.9.19Patch availableGHSA-97qf-pq7x-964m
—moodle/moodle (Packagist)3.10.0 to before 3.11.123.11.12Patch availableGHSA-97qf-pq7x-964m
—moodle/moodle (Packagist)4.0.0-beta to before 4.0.64.0.6Patch availableGHSA-97qf-pq7x-964m
—moodle/moodle (Packagist)4.1.0-beta to before 4.1.14.1.1Patch availableGHSA-97qf-pq7x-964m
  • moodle Vendor— Affected 4.1.0 to before 4.1.1; 4.0.0 to before 4.0.6; 3.11.0 to before 3.11.12; before 3.9.19 Fixed in 4.1.1, 4.0.6, 3.11.12, 3.9.19 Patch available CNA
  • moodle/moodle (Packagist) Vendor— Affected before 3.9.19 Fixed in 3.9.19 Patch available GHSA-97qf-pq7x-964m
  • moodle/moodle (Packagist) Vendor— Affected 3.10.0 to before 3.11.12 Fixed in 3.11.12 Patch available GHSA-97qf-pq7x-964m
  • moodle/moodle (Packagist) Vendor— Affected 4.0.0-beta to before 4.0.6 Fixed in 4.0.6 Patch available GHSA-97qf-pq7x-964m
  • moodle/moodle (Packagist) Vendor— Affected 4.1.0-beta to before 4.1.1 Fixed in 4.1.1 Patch available GHSA-97qf-pq7x-964m

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*3.9.0 to before 3.9.19; 3.11.0 to before 3.11.12; 4.0.0 to before 4.0.6VulnerableMoodle
cpe:2.3:a:moodle:moodle:4.1.0:-:*:*:*:*:*:*4.1.0VulnerableMoodle
  • cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* Versions 3.9.0 to before 3.9.19; 3.11.0 to before 3.11.12; 4.0.0 to before 4.0.6 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:4.1.0:-:*:*:*:*:*:* Versions 4.1.0 Vulnerable ·Moodle

Remediation

  • Fix · CNA moodle Fixed in 4.1.1, 4.0.6, 3.11.12, 3.9.19
  • Fix · GHSA-97qf-pq7x-964m moodle/moodle (Packagist) Fixed in 3.9.19 Advisory →
  • Fix · GHSA-97qf-pq7x-964m moodle/moodle (Packagist) Fixed in 3.11.12 Advisory →
  • Fix · GHSA-97qf-pq7x-964m moodle/moodle (Packagist) Fixed in 4.0.6 Advisory →
  • Fix · GHSA-97qf-pq7x-964m moodle/moodle (Packagist) Fixed in 4.1.1 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-23921
  2. 2026-10-03 Alias added: GHSA-97qf-pq7x-964m

References

Patch 2

Advisory 2

Other 1

  • 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