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CVE PROGRAM SOURCE RECORD2.3 Low

CVE-2026-53640

FOSSBilling missing authorization checks on read-only admin API endpoints expose sensitive staff, client, and redirect data

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

FOSSBilling FOSSBilling

  • < 0.8.0affected

References