PT-2026-56038 · Fossbilling · Fossbilling

Mitchell45 · Publicado 2026-07-06 · Atualizado 2026-07-06 · CVE-2026-53645

Mitre

CVSS v4.0

8.5

Alta

Vetor base

AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:L

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.

Correção

Improper Privilege Management

Enumeração de Fraquezas

CWE-269

Identificadores relacionados

CVE-2026-53645

Produtos afetados

Fossbilling

Referências · 2

• https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-4hf7-xxxw-64rm · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-53645 · Nota de Segurança