CVE-2024-33996
moodle: broken access control when setting calendar event type
Incorrect validation of allowed event types in a calendar web service made it possible for some users to create events with types/audiences they did not have permission to publish to.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
moodle: broken access control when setting calendar event type
Incorrect validation of allowed event types in a calendar web service made it possible for some users to create events with types/audiences they did not have permission to publish to.
- Record
CVE-2024-33996- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2024-1420
Incorrect validation of allowed event types in a calendar web service made it possible for some users to create events with types/audiences they did not have permission to publish to.
- Record
EUVD-2024-1420- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4qww-rxq6-x7gf
Moodle broken access control when setting calendar event type
Incorrect validation of allowed event types in a calendar web service made it possible for some users to create events with types/audiences they did not have permission to publish to.
- Record
GHSA-4qww-rxq6-x7gf- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
NVD
Incorrect validation of allowed event types in a calendar web service made it possible for some users to create events with types/audiences they did not have permission to publish to.
- Record
CVE-2024-33996- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
OSV
moodle: broken access control when setting calendar event type
Incorrect validation of allowed event types in a calendar web service made it possible for some users to create events with types/audiences they did not have permission to publish to.
- Record
CVE-2024-33996- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
OSVGHSA-4qww-rxq6-x7gf
Moodle broken access control when setting calendar event type
Incorrect validation of allowed event types in a calendar web service made it possible for some users to create events with types/audiences they did not have permission to publish to.
- Record
GHSA-4qww-rxq6-x7gf- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2024-33996
Incorrect validation of allowed event types in a calendar web service made it possible for some users to create events with types/audiences they did not have permission to publish to.
- Record
UBUNTU-CVE-2024-33996- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:N - Updated
- 2026-11-02
OSVBIT-moodle-2024-33996 No score
moodle: broken access control when setting calendar event type
Incorrect validation of allowed event types in a calendar web service made it possible for some users to create events with types/audiences they did not have permission to publish to.
- Record
BIT-moodle-2024-33996- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
moodle/moodlePackagist |
4.3.0 up to 4.3.4 | 4.3.4 |
moodle/moodlePackagist |
4.2.0 up to 4.2.7 | 4.2.7 |
moodle/moodlePackagist |
before 4.1.10 | 4.1.10 |
moodleBitnami |
before 4.1.10, 4.2.0 up to 4.2.7, 4.3.0 up to 4.3.4 | 4.1.104.2.74.3.4 |
moodle/moodlePackagist |
4.3.0 up to 4.3.4, plus listed versions v4.3.0v4.3.1v4.3.2v4.3.3 |
4.3.4 |
moodle/moodlePackagist |
4.2.0 up to 4.2.7, plus listed versions v4.2.0v4.2.1v4.2.2v4.2.3v4.2.4v4.2.5v4.2.6 |
4.2.7 |
moodle/moodlePackagist |
before 4.1.10, plus listed versions v2.3.10v2.3.11v2.3.4v2.3.5v2.3.6 Show 45 moreShow lessv2.3.7v2.3.8v2.3.9v2.4.0v2.4.0-rc1v2.4.1v2.4.10v2.4.11v2.4.2v2.4.3v2.4.4v2.4.5v2.4.6v2.4.7v2.4.8v2.4.9v2.5.0v2.5.0-betav2.5.0-rc1v2.5.1v2.5.2v2.5.3v2.5.4v2.5.5v2.5.6v2.5.7v2.5.8v2.5.9v2.6.0v2.6.0-betav2.6.0-rc1v2.6.1v2.6.10v2.6.11v2.6.2v2.6.3v2.6.4v2.6.5v2.6.6v2.6.7v2.6.8v2.6.9v2.7.0v2.7.0-betav2.7.0-rc1 |
4.1.10 |
moodleUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 2.7.9+dfsg-12.7.10+dfsg-12.7.11+dfsg-12.7.11+dfsg-22.7.12+dfsg-13.0.3+dfsg-0ubuntu13.0.3+dfsg-0ubuntu1+esm1 |
None known |
moodleUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 3.0.3+dfsg-0ubuntu13.0.3+dfsg-0ubuntu1+esm1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2024-33996 is a medium vulnerability (CVSS 6.2) in Moodle, published May 31, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 31st percentile. Fixed in moodle/moodle 4.3.4.
References
moodle.org/mod/forum/discuss.php?d=458384
nvd.nist.gov/vuln/detail/CVE-2024-33996
git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-81247
github.com/advisories/GHSA-4qww-rxq6-x7gf
ubuntu.com/security/CVE-2024-33996
cve.org/CVERecord?id=CVE-2024-33996
Left out here: 292 versions. The JSON record has them.