CVE-2026-53645

FOSSBilling is a free, open-source billing and client management system. Versions prior to 0.8.0 allow a low-privileged staff account to grant arbitrary module permissions to itself through the admin API, resulting in persistent privilege escalation. A staff user that only has `staff.create_and_edit_staff` can call `/api/admin/staff/permissions_update` targeting their own account and write any permission structure, bypassing the intended role-based access control boundary. Version 0.8.0 patches the issue. Some workarounds are available. Restrict the `staff.create_and_edit_staff` permission to only highly trusted staff members and/or use a reverse proxy or WAF to restrict access to `/api/admin/staff/permissions_update` to specific trusted roles.

CVSS

No CVSS.

References

Link	Resource
https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-4hf7-xxxw-64rm

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-06 23:16

Updated : 2026-07-07 14:16

NVD link : CVE-2026-53645

Mitre link : CVE-2026-53645

CVE.ORG link : CVE-2026-53645

JSON object : View

Products Affected

No product.

CWE

CWE-269

Improper Privilege Management

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