Vulnerability Description
FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, low-privileged staff accounts may read sensitive data via admin API endpoints that lack permission checks. While sibling write endpoints correctly enforce fine-grained permissions, the corresponding read endpoints have no authorization guards. Version 0.8.0 contains a fix. Some workarounds are available. Restrict staff accounts to only those who need access to sensitive data and/or use a reverse proxy or WAF to restrict access to the affected endpoints.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-53640?
CVE-2026-53640 is a documented vulnerability. FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, low-privileged staff accounts may read sensitive data via admin API endpoints that lack permission chec...
How severe is CVE-2026-53640?
CVSS scoring is not yet available for CVE-2026-53640. Check NVD for updates.
Is there a patch for CVE-2026-53640?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.