Vulnerability Description
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.
Related Weaknesses (CWE)
References
- https://github.com/FOSSBilling/FOSSBilling/releases/tag/0.8.0
- https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-qv6c-v49w-8g
FAQ
What is CVE-2026-43918?
CVE-2026-43918 is a documented vulnerability. 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 a...
How severe is CVE-2026-43918?
CVSS scoring is not yet available for CVE-2026-43918. Check NVD for updates.
Is there a patch for CVE-2026-43918?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.