Incorrect authorization in moodle
Priority LOW 22CWE-863Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-863.
Summary
The web service responsible for fetching other users' enrolled courses did not validate that the requesting user had permission to view that information in each course in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.
Why it matters now
EPSS 0.0111 66th percentileScored 2026-11-07
Fix Fixed moodle/moodle (Packagist): 3.10.2, 3.9.5, 3.8.8 +1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | moodle | Fixed in 3.10.2, 3.9.5, 3.8.8, 3.5.17 | — | No fix listed | CNA |
| — | moodle/moodle (Packagist) | 3.10.0 to before 3.10.2 | 3.10.2 | Patch available | GHSA-2m72-m5cw-3g9h |
| — | moodle/moodle (Packagist) | 3.9.0 to before 3.9.5 | 3.9.5 | Patch available | GHSA-2m72-m5cw-3g9h |
| — | moodle/moodle (Packagist) | 3.8.0 to before 3.8.8 | 3.8.8 | Patch available | GHSA-2m72-m5cw-3g9h |
| — | moodle/moodle (Packagist) | before 3.5.17 | 3.5.17 | Patch available | GHSA-2m72-m5cw-3g9h |
- moodle Vendor— Affected Fixed in 3.10.2, 3.9.5, 3.8.8, 3.5.17 Fixed in — No fix listed CNA
- moodle/moodle (Packagist) Vendor— Affected 3.10.0 to before 3.10.2 Fixed in 3.10.2 Patch available GHSA-2m72-m5cw-3g9h
- moodle/moodle (Packagist) Vendor— Affected 3.9.0 to before 3.9.5 Fixed in 3.9.5 Patch available GHSA-2m72-m5cw-3g9h
- moodle/moodle (Packagist) Vendor— Affected 3.8.0 to before 3.8.8 Fixed in 3.8.8 Patch available GHSA-2m72-m5cw-3g9h
- moodle/moodle (Packagist) Vendor— Affected before 3.5.17 Fixed in 3.5.17 Patch available GHSA-2m72-m5cw-3g9h
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* | 3.5.0 to before 3.5.17; 3.8.0 to before 3.8.8; 3.9.0 to before 3.9.5; 3.10.0 to before 3.10.2 | Vulnerable | Moodle |
| cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | 32 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | 34 | Vulnerable | Fedoraproject |
- cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* Versions 3.5.0 to before 3.5.17; 3.8.0 to before 3.8.8; 3.9.0 to before 3.9.5; 3.10.0 to before 3.10.2 Vulnerable ·Moodle
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Versions 32 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
Remediation
- Fix · GHSA-2m72-m5cw-3g9h moodle/moodle (Packagist) Fixed in 3.10.2 Advisory →
- Fix · GHSA-2m72-m5cw-3g9h moodle/moodle (Packagist) Fixed in 3.9.5 Advisory →
- Fix · GHSA-2m72-m5cw-3g9h moodle/moodle (Packagist) Fixed in 3.8.8 Advisory →
- Fix · GHSA-2m72-m5cw-3g9h moodle/moodle (Packagist) Fixed in 3.5.17 Advisory →
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
moodle — FEDORA-2021-1c27e89d49
5 records Highest priority Priority LOW 5 LOW
Other records, highest priority first
- TI-2021-03573 Incorrect authorization in moodlePriority LOW 27
- TI-2021-03572 Information disclosure in moodlePriority LOW 27
- TI-2021-03571 Cross-site scripting in moodlePriority LOW 27
- Advisory ·
moodle — FEDORA-2021-50f63a0161
5 records Highest priority Priority LOW 5 LOW
Other records, highest priority first
- TI-2021-03573 Incorrect authorization in moodlePriority LOW 27
- TI-2021-03572 Information disclosure in moodlePriority LOW 27
- TI-2021-03571 Cross-site scripting in moodlePriority LOW 27
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20283
- 2026-10-03 Alias added: GHSA-2m72-m5cw-3g9h
References
Advisory 4
Sources
- CVE-2021-20283 · CVE Program
- CVE-2021-20283 · NVD
- FIRST EPSS
- GHSA-2m72-m5cw-3g9h · GitHub Advisory Database · CC BY 4.0
- CVE-2021-20283 · Red Hat security data · CC BY 4.0
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