CVE-2026-43918 — Suspended or inactive FOSSBilling accounts can retain or regain access through existing sessions, API tokens, and password reset flows
FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, when a client or staff/admin account is suspended or marked inactive, existing a…
Published: 2026-07-06 · CVSS: 8.7 · CVSS 4.0
FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, when a client or staff/admin account is suspended or marked inactive, existing authenticated sessions are not invalidated. The session identity loaders in src/di.php (loggedin_client and loggedin_admin) only reject sessions if the backing account record no longer exists in the database. They do not verify that the account's status is still active. This allows a suspended or deactivated user to retain full access until their session naturally expires. This issue has been fixed in version 0.8.0.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7