FOSSBilling < 0.5.3 - Cross-Site Scripting

Cross-site Scripting XSS - Reflected in GitHub repository fossbilling/fossbilling prior to 0.5.4. id: CVE-2023-3521 info: name: FOSSBilling &datefrom='" HTTP/1.1 Host: Hostname matchers-condition: and matchers: - type: word part: body words:...

CVE-2026-53648

FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.1, downloadable product files are stored using a deterministic filename-derived path. When an administrator uploads a file for a downloadable product, FOSSBilling stores the file as md5 under the uploads...

CVE-2026-53647

FOSSBilling is a free, open-source billing and client management system. In versions 0.5.3 through 0.7.2, the Guest serviceapikey/getinfo API endpoint is accessible without authentication. Any caller with a valid API key can retrieve all custom configuration parameters custom fields stored in the...

CVE-2026-53646

FOSSBilling is a free, open-source billing and client management system. In versions 0.5.6 through 0.7.2, when a ClientPasswordReset record already exists for a client from a previous unexpired reset request, subsequent calls to the resetpassword guest API endpoint reuse the existing token instea...

CVE-2026-53642

FOSSBilling is a free, open-source billing and client management system. In versions 0.5.6 through 0.7.2, when the "Require Email Confirmation" setting is enabled, a logged-in client with an unverified email address emailapproved = 0 can access all client-area pages e.g. /client/balance,...

CVE-2026-53645

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...

CVE-2026-53643

FOSSBilling is a free, open-source billing and client management system. Versions prior to 0.8.0 allow low-privileged staff accounts to perform unauthorized actions via admin API endpoints. The root cause is a combination of the canalwaysaccess module flag which grants all staff access to certain...

CVE-2026-53644

FOSSBilling is a free, open-source billing and client management system. Versions 0.5.3 through 0.7.2 allow authenticated clients to both read and reset API key service secrets for orders that are no longer in an active state e.g., suspended, canceled. The root cause is missing order-state...

CVE-2026-53640

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...

CVE-2026-53641

FOSSBilling is a free, open-source billing and client management system. Versions 0.6.0 through 0.7.2 have a stored cross-site scripting XSS vulnerability in the client-facing email history views of FOSSBilling. Email HTML content contenthtml is rendered into a JavaScript template literal using t...

CVE-2026-53648 FOSSBilling: Downloadable product files can be overwritten through filename collisions

FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.1, downloadable product files are stored using a deterministic filename-derived path. When an administrator uploads a file for a downloadable product, FOSSBilling stores the file as md5 under the uploads...

CVE-2026-53648

FOSSBilling prior to v0.8.1 stores downloadable product files with a deterministic path md5(), so files with identical names between different products/orders map to the same stored path and can be overwritten by later uploads. This leads to customers/admins downloading the wrong file. Version 0....

CVE-2026-53648 FOSSBilling: Downloadable product files can be overwritten through filename collisions

FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.1, downloadable product files are stored using a deterministic filename-derived path. When an administrator uploads a file for a downloadable product, FOSSBilling stores the file as md5 under the uploads...

CVE-2026-53647

CVE-2026-53647 affects FOSSBilling 0.5.3–0.7.2 where the Guest serviceapikey/get_info endpoint is accessible without authentication. An unauthenticated caller with a valid API key can retrieve all custom_* fields stored in the key’s database record, potentially exposing pricing tiers, feature fla...

CVE-2026-53647 FOSSBilling vulnerable to unauthenticated API key configuration disclosure via guest Serviceapikey get_info endpoint

FOSSBilling is a free, open-source billing and client management system. In versions 0.5.3 through 0.7.2, the Guest serviceapikey/getinfo API endpoint is accessible without authentication. Any caller with a valid API key can retrieve all custom configuration parameters custom fields stored in the...

CVE-2026-53646 FOSSBilling: Client password reset token reuse allows persistent account takeover

FOSSBilling is a free, open-source billing and client management system. In versions 0.5.6 through 0.7.2, when a ClientPasswordReset record already exists for a client from a previous unexpired reset request, subsequent calls to the resetpassword guest API endpoint reuse the existing token instea...

CVE-2026-53646

FOSSBilling is a free, open-source billing and client management system. In versions 0.5.6 through 0.7.2, when a ClientPasswordReset record already exists for a client from a previous unexpired reset request, subsequent calls to the resetpassword guest API endpoint reuse the existing token instea...

CVE-2026-53646

CVE-2026-53646 affects FOSSBilling 0.5.6–0.7.2, where a ClientPasswordReset record from a prior unexpired request causes subsequent reset_password calls to reuse the original token. The 15-minute validity window is tied to the first request’s created_at, not the latest email, allowing an attacker...

CVE-2026-53646 FOSSBilling: Client password reset token reuse allows persistent account takeover

FOSSBilling is a free, open-source billing and client management system. In versions 0.5.6 through 0.7.2, when a ClientPasswordReset record already exists for a client from a previous unexpired reset request, subsequent calls to the resetpassword guest API endpoint reuse the existing token instea...

CVE-2026-53645 FOSSBilling's missing self-edit prevention in staff permission management allows persistent privilege escalation

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...