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:...

FOSSBilling 0.5.4-0.7.x - Unauthenticated System API Role Authorization Bypass

FOSSBilling versions 0.5.4 through 0.7.x contain an authorization bypass in API role handling. The internal system role is accepted from the URL, resolves to the cron-admin identity, and reaches privileged system API methods without authentication, a session, or a CSRF token. Version 0.8.0 reject...

FOSKiller

███████╗ ██████╗ ███████╗██╗ ██╗██╗██╗ ██╗ ███████╗██████╗ ██╔════╝██╔═══██╗██╔════╝██║ ██╔╝██║██║ ██║ ██╔════╝██╔══██╗ █████╗ ██║ ██║███████╗█████╔╝ ██║██║ ██║ █████╗ ██████╔╝ ██╔══╝ ██║ ██║╚════██║██╔═██╗ ██║██║ ██║ ██╔══╝ ██╔══██╗ ██║ ╚██████╔╝███████║██║ ██╗██║███████╗███████╗███████╗██║ ██║...

CVE-2026-28496-Lab

CVE-2026-28496 - FOSSBilling Server-Side Template Injection in Twig Rendering Executive Summary This repository contains a local Docker lab for reproducing and validating CVE-2026-28496, a Server-Side Template Injection vulnerability affecting FOSSBilling's Twig template rendering behavior...

CVE-2026-28496

CVE-2026-27604 + CVE-2026-28496 — FOSSBilling Pre-Auth RCE Chain Executive Summary This repository contains a local Docker lab for reproducing and validating the FOSSBilling Pre-Auth RCE chain, composed of two chained vulnerabilities: CVE| Type| CVSS v4| GHSA| Description ---|---|---|---|---...

CVE-2026-112374

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 clientlogin and clientcreate, leaving stafflogin...

CVE-2026-112374 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 clientlogin and clientcreate, leaving stafflogin...

EUVD-2026-113897

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 clientlogin and clientcreate, leaving stafflogin...

CVE-2026-112374

FOSSBilling versions prior to 0.8.9 are vulnerable to a Cross-Site Request Forgery (CSRF) flaw in the staff guest login endpoint (POST /api/guest/staff/login ). The root cause is that the checkGuestClientAuthentication() function only allowlists client_login and client_create, failing to provide ...

CVE-2026-112374 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 clientlogin and clientcreate, leaving stafflogin...

PT-2026-133515

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 login and client create, leaving staff logi...

CVE-2026-111046

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 managesettings checks. A low-privileged staff account with...

CVE-2026-111053

FOSSBilling is an open source billing and client-management platform. From 0.1.0 until 0.8.7, the unauthenticated api/guest/system/templateexists endpoint permits path traversal because templateExists uses Path::join on the attacker-controlled file parameter without rejecting .. sequences or...

CVE-2026-111056

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 unredacted error when the submitted ema...

CVE-2026-111056 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 unredacted error when the submitted ema...

CVE-2026-111056 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 unredacted error when the submitted ema...

EUVD-2026-104418

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 unredacted error when the submitted ema...

CVE-2026-111056

The FOSSBilling open-source billing platform is vulnerable to unauthenticated client account enumeration in versions 0.1.0 through 0.8.7 . The issue exists in the POST /api/guest/client/create endpoint, where the Box Mod Client Api Guest::create method returns an unredacted error message when Cli...

CVE-2026-111053 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/templateexists endpoint permits path traversal because templateExists uses Path::join on the attacker-controlled file parameter without rejecting .. sequences or...

CVE-2026-111053 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/templateexists endpoint permits path traversal because templateExists uses Path::join on the attacker-controlled file parameter without rejecting .. sequences or...