CVE-2026-33731

{"id": "CVE-2026-33731", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33731", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-17T11:11:59.098349Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "WWBN", "product": "AVideo", "versions": [{"status": "affected", "version": "< 29.0"}]}]}], "published": "2026-07-16T21:17:20.317", "references": [{"url": "https://github.com/WWBN/AVideo/commit/033e83ae904cacb99495dbea7cbcfb3738cf42e4", "source": "security-advisories@github.com"}, {"url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-95jh-7r58-xmxw", "source": "security-advisories@github.com"}, {"url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-95jh-7r58-xmxw", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-345"}]}], "descriptions": [{"lang": "en", "value": "WWBN AVideo is an open source video platform. In versions prior to 29.0, the Authorize.Net webhook handler at plugin/AuthorizeNet/webhook.php contains a signature verification bypass that allows an attacker to forge webhook requests with arbitrary payment amounts and target user IDs. By supplying a valid transaction ID from a small legitimate purchase, the attacker bypasses signature validation and credits arbitrary wallet balances to any user account via attacker-controlled payload fields. Three flaws combine into an exploit chain: signature bypass via OR logic (webhook.php:33), payload values override API-fetched values (AuthorizeNet.php:169-171, webhook.php:44-48) and a missing approval check (webhook.php:61-75). By forging payment metadata, an attacker can credit arbitrary amounts to any user's wallet without a corresponding payment and include a \u00a0plans_id\u00a0 to activate premium subscriptions (webhook.php:86-134), enabling free access to all paid and premium content and causing direct revenue loss to the platform owner. This issue has been fixed in version 29.0."}, {"lang": "es", "value": "WWBN AVideo es una plataforma de video de c\u00f3digo abierto. En versiones anteriores a la 29.0, el gestor de webhooks de Authorize.Net en plugin/AuthorizeNet/webhook.php contiene una omisi\u00f3n de verificaci\u00f3n de firma que permite a un atacante falsificar solicitudes de webhook con cantidades de pago arbitrarias e IDs de usuario objetivo. Al proporcionar un ID de transacci\u00f3n v\u00e1lido de una peque\u00f1a compra leg\u00edtima, el atacante omite la validaci\u00f3n de firma y acredita saldos de monedero arbitrarios a cualquier cuenta de usuario a trav\u00e9s de campos de carga \u00fatil controlados por el atacante. Tres fallos se combinan en una cadena de exploit: omisi\u00f3n de firma a trav\u00e9s de l\u00f3gica OR (webhook.php:33), los valores de la carga \u00fatil anulan los valores obtenidos por la API (AuthorizeNet.php:169-171, webhook.php:44-48) y una verificaci\u00f3n de aprobaci\u00f3n faltante (webhook.php:61-75). Al falsificar metadatos de pago, un atacante puede acreditar cantidades arbitrarias al monedero de cualquier usuario sin un pago correspondiente e incluir un plans_id para activar suscripciones premium (webhook.php:86-134), lo que permite el acceso gratuito a todo el contenido de pago y premium y causando una p\u00e9rdida directa de ingresos al propietario de la plataforma. Este problema ha sido solucionado en la versi\u00f3n 29.0."}], "lastModified": "2026-10-24T20:10:00.137", "sourceIdentifier": "security-advisories@github.com"}