CVE-2025-66028
OneUptime is Vulnerable to Privilege Escalation via Login Response Manipulation
Impact
### Summary During the login process, the server response included a parameter called isMasterAdmin. By intercepting and modifying this parameter value from false to true, a user is able to gain access to the admin dashboard interface. However, despite accessing the admin panel, the user does not have sufficient permissions to view or interact with actual data. ### PoC Intercept the login response and change "isMasterAdmin": false → "isMasterAdmin": true <img width="1405" height="567" alt="image" src="https://github.com/user-attachments/assets/7036398b-bb41-46c1-b66a-e49ec2bc3abb" /> <img width="1533" height="476" alt="2" src="https://github.com/user-attachments/assets/4efcaef5-a939-4729-be43-3af62a7d02f8" /> ### Impact The admin dashboard is viewable.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @oneuptime/common | < 8.0.5567 | 8.0.5567 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Hackerbay | Oneuptime | before 8.0.5567 |