CVE-2026-25536

{"id": "CVE-2026-25536", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-25536", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-02-05T20:58:06.900713Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 4.2, "exploitabilityScore": 2.8}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 4.2, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "modelcontextprotocol", "product": "typescript-sdk", "versions": [{"status": "affected", "version": ">= 1.10.0, < 1.26.0"}]}]}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "affectedData": [{"cpes": ["cpe:/a:redhat:ansible_automation_platform:2.6::el9"], "vendor": "Red Hat", "product": "Red Hat Ansible Automation Platform 2.6", "versions": [{"status": "unaffected", "version": "1772196222", "lessThan": "*", "versionType": "rpm"}], "packageName": "ansible-automation-platform-tech-preview/mcp-server-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}]}], "published": "2026-02-04T22:15:59.663", "references": [{"url": "https://github.com/modelcontextprotocol/typescript-sdk/issues/204", "tags": ["Issue Tracking", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/modelcontextprotocol/typescript-sdk/issues/243", "tags": ["Issue Tracking", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/modelcontextprotocol/typescript-sdk/security/advisories/GHSA-345p-7cg4-v4c7", "tags": ["Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:3960", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-25536", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2436937", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25536.json", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-362"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-367"}]}], "descriptions": [{"lang": "en", "value": "MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients. From version 1.10.0 to 1.25.3, cross-client response data leak when a single McpServer/Server and transport instance is reused across multiple client connections, most commonly in stateless StreamableHTTPServerTransport deployments. This issue has been patched in version 1.26.0."}, {"lang": "es", "value": "El SDK de TypeScript de MCP es el SDK oficial de TypeScript para servidores y clientes de Model Context Protocol. Desde la versi\u00f3n 1.10.0 hasta la 1.25.3, se produce una fuga de datos de respuesta entre clientes cuando una \u00fanica instancia de McpServer/servidor y de transporte es reutilizada a trav\u00e9s de m\u00faltiples conexiones de cliente, m\u00e1s com\u00fanmente en despliegues de StreamableHTTPServerTransport sin estado. Este problema ha sido parcheado en la versi\u00f3n 1.26.0."}], "lastModified": "2026-07-15T02:18:54.340", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:lfprojects:mcp_typescript_sdk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B979E384-46FC-45C2-947D-62860FC1F257", "versionEndExcluding": "1.26.0", "versionStartIncluding": "1.10.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}