moodle: broken access control when setting calendar event type (CVE-2024-33996)
A vulnerability in Moodle's calendar web service allows some users to create calendar events with types or audiences they are not authorized to publish to due to improper validation of allowed event types. This issue affects multiple Moodle versions prior to specific fixed releases. The vulnerability has a medium severity rating and a patch is available to address the issue.
AI Analysis
Technical Summary
CVE-2024-33996 is a broken access control vulnerability in Moodle's calendar web service. The flaw arises from incorrect validation of allowed event types, enabling certain users to create calendar events with unauthorized types or audiences. This improper access control could lead to unauthorized event creation within the calendar feature. The vulnerability affects Moodle versions prior to 4.1.10, versions from 4.2.0 up to but not including 4.2.7, and versions from 4.3.0 up to but not including 4.3.4. A patch is available to remediate this issue.
Potential Impact
Users with limited permissions could exploit this vulnerability to create calendar events with types or audiences they are not authorized to use. This could lead to unauthorized information disclosure or manipulation of calendar data within Moodle. There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. It is recommended to upgrade affected Moodle installations to versions 4.1.10 or later, 4.2.7 or later, or 4.3.4 or later to remediate the issue. No additional mitigation actions are indicated by the vendor advisory.
moodle: broken access control when setting calendar event type (CVE-2024-33996)
Description
A vulnerability in Moodle's calendar web service allows some users to create calendar events with types or audiences they are not authorized to publish to due to improper validation of allowed event types. This issue affects multiple Moodle versions prior to specific fixed releases. The vulnerability has a medium severity rating and a patch is available to address the issue.
Affected software
pkg:bitnami/moodleRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-33996 is a broken access control vulnerability in Moodle's calendar web service. The flaw arises from incorrect validation of allowed event types, enabling certain users to create calendar events with unauthorized types or audiences. This improper access control could lead to unauthorized event creation within the calendar feature. The vulnerability affects Moodle versions prior to 4.1.10, versions from 4.2.0 up to but not including 4.2.7, and versions from 4.3.0 up to but not including 4.3.4. A patch is available to remediate this issue.
Potential Impact
Users with limited permissions could exploit this vulnerability to create calendar events with types or audiences they are not authorized to use. This could lead to unauthorized information disclosure or manipulation of calendar data within Moodle. There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. It is recommended to upgrade affected Moodle installations to versions 4.1.10 or later, 4.2.7 or later, or 4.3.4 or later to remediate the issue. No additional mitigation actions are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- BIT-moodle-2024-33996
- Osv Schema Version
- 1.6.2
- Aliases
- ["CVE-2024-33996"]
- Ecosystems
- ["Bitnami"]
- Database Specific Severity
- Medium
- Cvss Version
- null
Threat ID: 6aa00618acd9273b49ab77b9
Added to database: 09/08/2026, 12:56:56 UTC
Last enriched: 09/08/2026, 13:45:13 UTC
Last updated: 09/09/2026, 00:58:28 UTC
Views: 11
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.