Vendor
FOSSBilling
43 known vulnerabilities.
FOSSBilling at a glance
Show as table
| Month | Vulnerabilities | Critical |
|---|---|---|
| Nov 2026 | 1 | 0 |
| Oct 2026 | 4 | 0 |
| Sep 2026 | 0 | 0 |
| Aug 2026 | 0 | 0 |
| Jul 2026 | 17 | 1 |
| Jun 2026 | 10 | 3 |
| May 2026 | 0 | 0 |
| Apr 2026 | 0 | 0 |
| Mar 2026 | 0 | 0 |
| Feb 2026 | 0 | 0 |
| Jan 2026 | 0 | 0 |
| Dec 2025 | 0 | 0 |
| Nov 2025 | 0 | 0 |
| Oct 2025 | 0 | 0 |
| Sep 2025 | 0 | 0 |
| Aug 2025 | 0 | 0 |
| Jul 2025 | 0 | 0 |
| Jun 2025 | 0 | 0 |
| May 2025 | 0 | 0 |
| Apr 2025 | 0 | 0 |
| Mar 2025 | 0 | 0 |
| Feb 2025 | 0 | 0 |
| Jan 2025 | 0 | 0 |
| Dec 2024 | 0 | 0 |
Products
43 results · Feed
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High 8.4
FOSSBilling: Low-privileged staff can run JavaScript in administrators' browsers via stored XSS in support ticket notes
FOSSBilling is an open source billing and client-management platform. From 0.1.0 until 0.8.9, the admin/support/note_create endpoint stores the note parameter without sanitization in the support_ticket_note table, and src/modules/Support/templates/admin/mod_s…
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Medium 4.3
FOSSBilling before 0.8.9 Login CSRF via Staff Guest Login API
FOSSBilling before 0.8.9 contains a Cross-Site Request Forgery vulnerability in the staff guest login endpoint (POST /api/guest/staff/login) that allows remote attackers to force authentication because checkGuestClientAuthentication() only allowlists client_l…
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Medium 6.9
FOSSBilling: Unauthenticated client account enumeration via guest signup endpoint
FOSSBilling is an open source billing and client-management platform. From 0.1.0 until 0.8.7, the unauthenticated POST /api/guest/client/create endpoint reveals whether a submitted email belongs to a registered client because guest signup returns a distinct u…
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Medium 6.9
FOSSBilling: Unauthenticated attacker can probe existence of arbitrary files via guest/system/template_exists
FOSSBilling is an open source billing and client-management platform. From 0.1.0 until 0.8.7, the unauthenticated api/guest/system/template_exists endpoint permits path traversal because templateExists uses Path::join on the attacker-controlled file parameter…
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Low 2.3
FOSSBilling: Low-privileged staff can read and modify configuration of deactivated extensions
FOSSBilling is an open source billing and client-management platform. From 0.8.4 until 0.8.6, hasManagePermission fails open for inactive non-core modules because its early return on !isExtensionActive skips the module-access and manage_settings checks. A low…
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Medium 5.1
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 st…
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Medium 6.9CVE-2026-53647 Public exploit
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/get_info` API endpoint is accessible without authentication. Any caller with a valid API key can retrieve all custom configurati…
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High 7.7
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 `reset_password` guest…
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High 8.5
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 …
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High 8.6
FOSSBilling's missing order-state validation allows clients to read and reset API key secrets for non-active orders
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`)…
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High 8.7
FOSSBilling allows low-privileged staff accounts to perform unauthorized actions via admin API endpoints
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 `can_always_access` module fla…
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Medium 5.3
FOSSBilling: Unverified clients can access client-area pages when email confirmation is required
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 (`email_approved = 0`) can access all clien…
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Medium 4.8
FOSSBilling has stored XSS in client email views via unescaped content in JavaScript template literal
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 (`content_html`) is render…
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Low 2.3
FOSSBilling missing authorization checks on read-only admin API endpoints expose sensitive staff, client, and redirect data
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-gr…
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Low 2.3
FOSSBilling: Payment amount not validated in PayPalEmail adapter allows invoice underpayment
FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, the PayPalEmail payment adapter accepts PayPal IPN callbacks and credits the IPN-supplied amount (`mc_gross`) to the client's balance without validating it agains…
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Medium 6.9
FOSSBilling has race condition in cart checkout that bypasses promo code usage limits
FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, a race condition in the cart checkout flow allows an authenticated client to apply a promo code beyond its configured maximum uses. By sending concurrent checkout…
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Medium 6.9
FOSSBilling: Mass assignment of group_id in guest client registration allows unauthorized promo code use
FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, an unauthenticated mass assignment vulnerability in the client self-registration endpoint allows any visitor to assign themselves to an arbitrary client group dur…
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High 8.9
FOSSBilling vulnerable to arbitrary PHP code injection via unescaped config serialization
FOSSBilling is a free, open-source billing and client management system. Versions 0.6.10 through 0.7.2 have a PHP code injection vulnerability in FOSSBilling's `Config::prettyPrintArrayToPHP()` method. When configuration values are updated, string values are …
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High 8.7
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 authenticated sessions are not invalidated. The session identity loaders in src/di.…
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High 7.7
FOSSBilling missing authorization in guest Invoice API endpoints
FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, the Guest API invoice/update endpoint is missing an authorization check present in other invoice-related endpoints, allowing an unauthenticated user with knowledg…
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Medium 6.9
FOSSBilling has improper SQL neutralization in `Massmailer` recipient filters
FOSSBilling is a free, open-source billing and client management system. Versions 0.6.0 through 0.7.2 have a SQL injection vulnerability in the `Massmailer` module filter functionality. An authenticated administrator can supply crafted filter values when upda…
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Critical 9.2
FOSSBilling has an unauthenticated payment bypass via IPN callback forgery
FOSSBilling is a free, open-source billing and client management system. Versions 0.6.0 through 0.7.2 have an unauthenticated payment bypass vulnerability in FOSSBilling's IPN callback endpoint. When the Custom payment adapter is enabled, an attacker can mark…
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Medium 6.9
FOSSBilling: Unauthenticated update patcher endpoint allows remote maintenance execution
FOSSBilling is a free, open-source billing and client management system. In versions 0.5.4 through 0.7.2, the /run-patcher maintenance endpoint in FOSSBilling was accessible without authentication, which allowed unauthenticated remote users to trigger update …
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Critical 9.3
FOSSBilling: Authentication bypass allows unauthenticated administrator creation
FOSSBilling is a free, open-source billing and client management system. Versions 0.7.2 and prior expose a guest API endpoint, /api/guest/staff/create, intended for initial administrator bootstrap. Due to a flawed admin-existence check, the endpoint remains u…
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High 7.1
FOSSBilling: IDOR in Servicecustom Client API allows cross-client data access
FOSSBilling is a free, open-source billing and client management system. In versions 0.7.2 and prior, the Servicecustom Client API's __call method accepts an order_id parameter and fetches the associated order without verifying the authenticated client owns i…
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High 7.1
FOSSBilling: Broken Authorization in Client Transaction and Order Listings
FOSSBilling is a free, open-source billing and client management system. In versions 0.7.2 and prior, a query-construction flaw in client list endpoints allowed authenticated clients to bypass tenant scoping and retrieve other clients’ data. Details In Servic…
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Medium 5.1
FOSSBilling: IDOR Vulnerability in Support Ticket Creation
FOSSBilling is a billing and client management system that automates invoicing, payments, and communication for online service businesses. Versions 0.6.21 through 0.7.2 are vulnerable to IDOR through the support ticket creation workflow. By manipulating rel_i…
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Critical 10.0
FOSSBilling: Improper API Role Validation (system) Enables Unauthenticated Access to Privileged Admin Functions
FOSSBilling is a free, open-source billing and client management system. Starting in version 0.5.4 and prior to version 0.8.0, an authorization bypass in the API role handling allows unauthenticated access to privileged `/api/system/*` endpoints. Because `sys…
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Critical 9.4CVE-2026-28496 Public exploit
FOSSBilling: Server-side template injection in Twig template rendering enables information disclosure and RCE
FOSSBilling is a free, open-source billing and client management system. Versions prior to 0.8.0 have a Server-Side Template Injection (SSTI) vulnerability in the template rendering system. Administrators with access to features that render Twig templates (em…
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Medium 6.3
FOSSBilling's password reset confirmation endpoint lacks rate limiting
FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, the password reset confirmation endpoint `/client/reset-password-confirm/:hash` is handled by a non-API controller and is not covered by FOSSBilling's rate limite…
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Medium 4.8
FOSSBilling has an open redirect via administrator-configured redirect targets
FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, the Redirect module does not validate the URL scheme of administrator-configured destination URLs before storing or issuing redirects. This allows arbitrary exter…
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Medium 6.9
FOSSBilling version exposed via asset cache buster
FOSSBilling is a free, open-source billing and client management system. Versions prior to 0.8.0 leak the exact system version through asset cache buster parameters in HTML output, bypassing the `hide_version_public` security setting. The FOSSBilling version …
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Low 3.8
Insufficient Session Expiration in fossbilling/fossbilling
Insufficient Session Expiration in GitHub repository fossbilling/fossbilling prior to 0.5.5.
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Medium 5.4
Cross-site Scripting (XSS) - Reflected in fossbilling/fossbilling
Cross-site Scripting (XSS) - Reflected in GitHub repository fossbilling/fossbilling prior to 0.5.4.
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High 7.7
Improper Neutralization of Formula Elements in a CSV File in fossbilling/fossbilling
Improper Neutralization of Formula Elements in a CSV File in GitHub repository fossbilling/fossbilling prior to 0.5.3.
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High 8.0
Unrestricted Upload of File with Dangerous Type in fossbilling/fossbilling
Unrestricted Upload of File with Dangerous Type in GitHub repository fossbilling/fossbilling prior to 0.5.3.
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Critical 9.8
SQL Injection in fossbilling/fossbilling
SQL Injection in GitHub repository fossbilling/fossbilling prior to 0.5.3.
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Medium 6.8
Session Fixation in fossbilling/fossbilling
Session Fixation in GitHub repository fossbilling/fossbilling prior to 0.5.1.
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High 8.0
Code Injection in fossbilling/fossbilling
Code Injection in GitHub repository fossbilling/fossbilling prior to 0.5.1.
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Medium 5.4
Business Logic Errors in fossbilling/fossbilling
Business Logic Errors in GitHub repository fossbilling/fossbilling prior to 0.5.0.