Read the docs
TI-2023-12879 Aliases CVE-2023-28331GHSA-77jm-f3vj-xvx2

Moodle: xss risk when outputting database activity filter data

Priority LOW 28CWE-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 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Content output by the database auto-linking filter required additional sanitizing to prevent an XSS risk.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00662 51st percentileScored 2026-11-07
Fix Fixed moodle: 4.1.2, 4.0.7, 3.11.13 +1moodle/moodle (Packagist): 4.1.2, 4.0.7, 3.11.13 +1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
—moodle4.1.0 to before 4.1.2; 4.0.0 to before 4.0.7; 3.11.0 to before 3.11.13; before 3.9.204.1.2, 4.0.7, 3.11.13, 3.9.20Patch availableCNA
—moodle/moodle (Packagist)4.1.0 to before 4.1.24.1.2Patch availableGHSA-77jm-f3vj-xvx2
—moodle/moodle (Packagist)4.0.0 to before 4.0.74.0.7Patch availableGHSA-77jm-f3vj-xvx2
—moodle/moodle (Packagist)3.11.0 to before 3.11.133.11.13Patch availableGHSA-77jm-f3vj-xvx2
—moodle/moodle (Packagist)before 3.9.203.9.20Patch availableGHSA-77jm-f3vj-xvx2
  • moodle Vendor— Affected 4.1.0 to before 4.1.2; 4.0.0 to before 4.0.7; 3.11.0 to before 3.11.13; before 3.9.20 Fixed in 4.1.2, 4.0.7, 3.11.13, 3.9.20 Patch available CNA
  • moodle/moodle (Packagist) Vendor— Affected 4.1.0 to before 4.1.2 Fixed in 4.1.2 Patch available GHSA-77jm-f3vj-xvx2
  • moodle/moodle (Packagist) Vendor— Affected 4.0.0 to before 4.0.7 Fixed in 4.0.7 Patch available GHSA-77jm-f3vj-xvx2
  • moodle/moodle (Packagist) Vendor— Affected 3.11.0 to before 3.11.13 Fixed in 3.11.13 Patch available GHSA-77jm-f3vj-xvx2
  • moodle/moodle (Packagist) Vendor— Affected before 3.9.20 Fixed in 3.9.20 Patch available GHSA-77jm-f3vj-xvx2

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*after 3.9.0, before 3.9.20; after 3.11.0, before 3.11.13; after 4.0.0, before 4.0.7VulnerableMoodle
cpe:2.3:a:moodle:moodle:3.9.0:-:*:*:*:*:*:*3.9.0VulnerableMoodle
cpe:2.3:a:moodle:moodle:3.11.0:-:*:*:*:*:*:*3.11.0VulnerableMoodle
cpe:2.3:a:moodle:moodle:4.0.0:-:*:*:*:*:*:*4.0.0VulnerableMoodle
cpe:2.3:a:moodle:moodle:4.1.0:-:*:*:*:*:*:*4.1.0VulnerableMoodle
cpe:2.3:a:moodle:moodle:4.1.1:*:*:*:*:*:*:*4.1.1VulnerableMoodle
  • cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* Versions after 3.9.0, before 3.9.20; after 3.11.0, before 3.11.13; after 4.0.0, before 4.0.7 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:3.9.0:-:*:*:*:*:*:* Versions 3.9.0 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:3.11.0:-:*:*:*:*:*:* Versions 3.11.0 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:4.0.0:-:*:*:*:*:*:* Versions 4.0.0 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:4.1.0:-:*:*:*:*:*:* Versions 4.1.0 Vulnerable ·Moodle
  • cpe:2.3:a:moodle:moodle:4.1.1:*:*:*:*:*:*:* Versions 4.1.1 Vulnerable ·Moodle

Remediation

  • Fix · CNA moodle Fixed in 4.1.2, 4.0.7, 3.11.13, 3.9.20
  • Fix · GHSA-77jm-f3vj-xvx2 moodle/moodle (Packagist) Fixed in 4.1.2 Advisory →
  • Fix · GHSA-77jm-f3vj-xvx2 moodle/moodle (Packagist) Fixed in 4.0.7 Advisory →
  • Fix · GHSA-77jm-f3vj-xvx2 moodle/moodle (Packagist) Fixed in 3.11.13 Advisory →
  • Fix · GHSA-77jm-f3vj-xvx2 moodle/moodle (Packagist) Fixed in 3.9.20 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-2023-28331
  2. 2026-10-03 Alias added: GHSA-77jm-f3vj-xvx2
  3. 2026-10-06 EPSS moved to the 50th–90th percentile

References

Patch 1

Advisory 2

Other 6

  • 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