CVE-2025-67856
Authorization Logic Flaw in Moodle Badge System Enables Privilege Escalation
Publication date: 2026-02-03
Last updated on: 2026-02-26
Assigner: Fedora Project
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| moodle | moodle | From 4.5.0 (inc) to 4.5.8 (exc) |
| moodle | moodle | From 5.0.0 (inc) to 5.0.4 (exc) |
| moodle | moodle | to 4.1.22 (exc) |
| moodle | moodle | From 4.4.0 (inc) to 4.4.12 (exc) |
| moodle | moodle | 5.1.0 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-863 | The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. |
Attack-Flow Graph
AI Powered Q&A
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
Can you explain this vulnerability to me?
This vulnerability is an authorization logic flaw in Moodle where incomplete role checks during the badge awarding process allow badges to be granted without proper verification. This means that users can receive badges they are not entitled to, bypassing normal role restrictions. [1]
How can this vulnerability impact me? :
The vulnerability can lead to unauthorized privilege escalation by allowing users to obtain badges without proper authorization. This could enable them to access features or permissions that should be restricted, potentially compromising the security of the Moodle environment. [1]
What immediate steps should I take to mitigate this vulnerability?
Since there is no specified fixed version available at the time of the report, immediate mitigation steps include reviewing and restricting badge awarding permissions to trusted users only, monitoring badge awarding activities for suspicious behavior, and applying any available security patches or updates from Moodle as soon as they are released. [1]