CVE-2025-64707
📋 TL;DR
CVE-2025-64707 is an access control vulnerability in Frappe Learning where role revocation isn't immediately effective due to caching issues. This allows users to retain privileges they should have lost, potentially accessing unauthorized content or functions. It affects all Frappe Learning instances running versions 2.0.0 through 2.40.0.
💻 Affected Systems
- Frappe Learning (LMS)
📦 What is this software?
Learning by Frappe
⚠️ Risk & Real-World Impact
Worst Case
A malicious user whose admin privileges were revoked could continue accessing sensitive administrative functions, modify course content, access student data, or escalate privileges.
Likely Case
Users retain access to learning materials or functions they should have lost after role changes, leading to unauthorized content access.
If Mitigated
Minimal impact with proper monitoring and quick patch deployment, though temporary privilege retention may occur.
🎯 Exploit Status
Exploitation requires a user account that has had roles revoked. The vulnerability is inherent to the caching mechanism and doesn't require special techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.41.0
Vendor Advisory: https://github.com/frappe/lms/security/advisories/GHSA-w2gf-rchw-x6vm
Restart Required: Yes
Instructions:
1. Backup your Frappe Learning instance. 2. Update to version 2.41.0 using the Frappe bench update command: bench update --apps lms. 3. Restart the application server. 4. Clear any remaining cache manually if needed.
🔧 Temporary Workarounds
Manual Cache Clearing
allManually clear the application cache after every role change operation
bench clear-cache
Disable Caching
allTemporarily disable role caching in development settings
Set 'cache_roles' to false in site_config.json
🧯 If You Can't Patch
- Implement strict monitoring of user activity logs for anomalous access patterns
- Establish manual verification procedures for role changes until patching is possible
🔍 How to Verify
Check if Vulnerable:
Check if your Frappe Learning version is between 2.0.0 and 2.40.0 inclusiveCheck Version:
bench versionVerify Fix Applied:
After updating to 2.41.0, test role revocation by removing a role from a test user and immediately verifying they cannot access restricted functions📡 Detection & Monitoring
Log Indicators:
- Users accessing resources after role revocation
- Multiple failed access attempts from recently demoted users
- Cache-related errors in application logs
Network Indicators:
- Unusual API calls from users with recently changed roles
- Access patterns inconsistent with current role assignments
SIEM Query:
source="frappe-lms" AND (event="access_denied" OR event="role_change") | stats count by user, resource