Moodle: Feedback response viewing and deletions did not respect Separate Groups mode (CVE-2025-26526)
Moodle versions prior to fixed releases did not enforce Separate Groups mode restrictions when viewing or deleting responses in Feedback activities. This allowed users to access or remove feedback responses outside their assigned groups, violating intended access controls. The issue affects multiple Moodle 4.x versions and has been addressed in official patches.
AI Analysis
Technical Summary
The vulnerability CVE-2025-26526 in Moodle involves improper permission checks related to the Separate Groups mode in Feedback activities. Specifically, the system failed to consider group restrictions before allowing users to view or delete feedback responses. This flaw could lead to unauthorized access or deletion of feedback data across group boundaries. The issue affects Moodle versions 4.1.0 through before 4.1.16, 4.3.0 through before 4.3.10, 4.4.0 through before 4.4.6, and 4.5.0 through before 4.5.2. Official patches are available to address this vulnerability.
Potential Impact
Users could bypass group-based access controls in Moodle Feedback activities, potentially viewing or deleting feedback responses from groups they are not authorized to access. This compromises data confidentiality and integrity within group-separated environments. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official patch is available and should be applied to affected Moodle versions. The patch addresses the permission checks to properly enforce Separate Groups mode restrictions. Users should upgrade to Moodle versions 4.1.16 or later, 4.3.10 or later, 4.4.6 or later, or 4.5.2 or later as appropriate. No additional mitigation actions are indicated by the vendor.
Moodle: Feedback response viewing and deletions did not respect Separate Groups mode (CVE-2025-26526)
Description
Moodle versions prior to fixed releases did not enforce Separate Groups mode restrictions when viewing or deleting responses in Feedback activities. This allowed users to access or remove feedback responses outside their assigned groups, violating intended access controls. The issue affects multiple Moodle 4.x versions and has been addressed in official patches.
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
The vulnerability CVE-2025-26526 in Moodle involves improper permission checks related to the Separate Groups mode in Feedback activities. Specifically, the system failed to consider group restrictions before allowing users to view or delete feedback responses. This flaw could lead to unauthorized access or deletion of feedback data across group boundaries. The issue affects Moodle versions 4.1.0 through before 4.1.16, 4.3.0 through before 4.3.10, 4.4.0 through before 4.4.6, and 4.5.0 through before 4.5.2. Official patches are available to address this vulnerability.
Potential Impact
Users could bypass group-based access controls in Moodle Feedback activities, potentially viewing or deleting feedback responses from groups they are not authorized to access. This compromises data confidentiality and integrity within group-separated environments. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official patch is available and should be applied to affected Moodle versions. The patch addresses the permission checks to properly enforce Separate Groups mode restrictions. Users should upgrade to Moodle versions 4.1.16 or later, 4.3.10 or later, 4.4.6 or later, or 4.5.2 or later as appropriate. No additional mitigation actions are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- BIT-moodle-2025-26526
- Osv Schema Version
- 1.6.2
- Aliases
- ["CVE-2025-26526"]
- Ecosystems
- ["Bitnami"]
- Database Specific Severity
- Medium
Patch Information
Threat ID: 6aa00612acd9273b49ab73b7
Added to database: 09/08/2026, 12:56:50 UTC
Last enriched: 09/08/2026, 13:42:02 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 10
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