CVE-2026-16481

{"id": "CVE-2026-16481", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-16481", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-27T19:35:22.831604Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "cve-coordination@google.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.0, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "HIGH", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "LOW", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "cve-coordination@google.com", "affectedData": [{"vendor": "Google", "product": "MCP Toolbox for Databases (googleapis/mcp-toolbox)", "versions": [{"status": "affected", "version": "0.19.1", "versionType": "semver", "lessThanOrEqual": "1.4.0"}], "defaultStatus": "unaffected"}]}], "published": "2026-07-27T19:17:14.970", "references": [{"url": "https://github.com/googleapis/mcp-toolbox/pull/3453", "tags": ["Patch", "Vendor Advisory", "Issue Tracking"], "source": "cve-coordination@google.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "cve-coordination@google.com", "description": [{"lang": "en", "value": "CWE-918"}]}], "descriptions": [{"lang": "en", "value": "A Server-Side Request Forgery (SSRF) and credential exfiltration vulnerability exists in the cloud-healthcare-fhir-fetch-page tool of googleapis/mcp-toolbox.\n\nThe tool takes an unvalidated pageURL parameter from the client and issues an HTTP GET request to it using an authenticated client. The underlying transport automatically attaches an Authorization: Bearer header to every outbound request regardless of the destination host. An attacker can supply an arbitrary external URL to the pageURL parameter (either directly via the tool execution payload or implicitly via data-driven pagination tracking loops), leading Toolbox into sending its OAuth/service-account access token to an attacker-controlled listener. Depending on the configuration, this leaks either the end-user's token or the broader service-account access token (ADC), potentially exposing Protected Health Information (PHI) and secondary Google Cloud Platform services."}, {"lang": "es", "value": "Una falsificaci\u00f3n de petici\u00f3n del lado del servidor (SSRF) y vulnerabilidad de exfiltraci\u00f3n de credenciales existe en la herramienta cloud-healthcare-fhir-fetch-page de googleapis/mcp-toolbox.\n\nLa herramienta toma un par\u00e1metro pageURL no validado del cliente y emite una petici\u00f3n GET HTTP a este usando un cliente autenticado. El transporte subyacente adjunta autom\u00e1ticamente un encabezado Authorization: Bearer a cada petici\u00f3n saliente independientemente del host de destino. Un atacante puede proporcionar una URL externa arbitraria al par\u00e1metro pageURL (ya sea directamente a trav\u00e9s de la carga \u00fatil de ejecuci\u00f3n de la herramienta o impl\u00edcitamente a trav\u00e9s de bucles de seguimiento de paginaci\u00f3n basados en datos), llevando a Toolbox a enviar su token de acceso de OAuth/cuenta de servicio a un oyente controlado por el atacante. Dependiendo de la configuraci\u00f3n, esto filtra el token del usuario final o el token de acceso de cuenta de servicio m\u00e1s amplio (ADC), exponiendo potencialmente Informaci\u00f3n de Salud Protegida (PHI) y servicios secundarios de Google Cloud Platform."}], "lastModified": "2026-10-24T13:10:00.147", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:google:mcp_toolbox_for_databases:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BFFF7CCC-42F3-4061-B79E-7897A5E5B10A", "versionEndExcluding": "1.5.0", "versionStartIncluding": "0.19.1"}], "operator": "OR"}]}], "sourceIdentifier": "cve-coordination@google.com"}