{“lastseen”:””,”description”:”Bypass vulnerability in the authentication method in the GTT Tax Information System application, related to the Active Directory (LDAP) login method.\\n\\nAuthentication is performed through a local WebSocket, but the web application does not properly validate the authenticity or origin of the data received, allowing an attacker with access to the local machine or internal network to impersonate the legitimate WebSocket and inject manipulated information.\\n\\nExploiting this vulnerability could allow an attacker to authenticate as any user in the domain, without the need for valid credentials, compromising the confidentiality, integrity, and availability of the application and its data.”,”published”:”2025-12-10T11:27:40.249Z”,”modified”:”2025-12-10T11:28:32.931Z”,”type”:”cve”,”title”:”Bypass in the authentication method of the GTT Sistema de Informaci\u00f3n Tributario application”,”source”:”INCIBE”,”references”:”https:\/\/www.incibe.es\/en\/incibe-cert\/notices\/aviso\/bypass-authentication-method-gtt-sistema-de-informacion-tributario”,”id”:”CVE-2025-13953″,”bulletinFamily”:””,”cwe”:[“CWE-290″],”cvelist”:null,”sourceData”:”GTT Sistema de Informaci\u00f3n Tributario All versions”,”sourceHref”:””,”cvss”:{“score”:9.3,”severity”:”CRITICAL”,”vector”:”CVSS:4.0\/AV:N\/AC:L\/AT:N\/PR:N\/UI:N\/VC:H\/VI:H\/VA:H\/SC:N\/SI:N\/SA:N”,”version”:”4.0″},”cvss2″:{},”cvss3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””,”cvssV3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””}},”href”:””,”category_name”:”CVE”,”post_link”:””,”product”:”Sistema de Informaci\u00f3n Tributario”,”version”:”All versions”,”vendor”:”GTT”,”ai_description”:”Bypass vulnerability in the authentication method of the GTT Tax Information System application”,”ai_severity”:”Critical”,”ai_vendor”:”GTT”,”ai_product”:”Sistema de Informaci\u00f3n Tributario”,”ai_version”:”All versions”,”ai_score”:9.3}<\/p>\n","protected":false},"excerpt":{"rendered":"
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