{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-14537", "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778", "state": "PUBLISHED", "assignerShortName": "Google", "dateReserved": "2026-07-03T01:40:43.351Z", "datePublished": "2026-07-31T01:38:18.978Z", "dateUpdated": "2026-07-31T16:08:17.628Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "14ed7db2-1595-443d-9d34-6215bf890778", "shortName": "Google", "dateUpdated": "2026-07-31T01:38:18.978Z" }, "title": "Authorization Bypass in MCP Toolbox Legacy HTTP Endpoints", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-863", "description": "CWE-863 (Incorrect Authorization)", "type": "CWE" } ] } ], "impacts": [ { "capecId": "CAPEC-180", "descriptions": [ { "lang": "en", "value": "CAPEC-180 Exploiting Incorrectly Configured Access Control Security Levels" } ] } ], "affected": [ { "vendor": "Google", "product": "mcp-toolbox", "versions": [ { "status": "affected", "version": "1.3.0" }, { "status": "affected", "version": "v1.4.0" } ], "defaultStatus": "unaffected" } ], "descriptions": [ { "lang": "en", "value": "Incorrect Authorization in the direct HTTP API tool invocation endpoint in Google mcp-toolbox versions v1.3.0 and v1.4.0 allows an unauthenticated attacker to invoke tools protected by the scopeRequired feature via sending tool invocation requests through legacy HTTP endpoints when the --enable-api flag is active.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "Incorrect Authorization in the direct HTTP API tool invocation endpoint in Google mcp-toolbox versions v1.3.0 and v1.4.0 allows an unauthenticated attacker to invoke tools protected by the scopeRequired feature via sending tool invocation requests through legacy HTTP endpoints when the --enable-api flag is active." } ] } ], "references": [ { "url": "https://github.com/googleapis/mcp-toolbox/pull/3435" } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "UNREPORTED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.1, "vectorString": "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/E:U" } } ], "credits": [ { "lang": "en", "value": "HE WEI (ギカク)", "type": "finder" }, { "lang": "en", "value": "David Carliez", "type": "reporter" } ], "source": { "discovery": "UNKNOWN" }, "x_generator": { "engine": "Vulnogram 1.0.2" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-07-31T16:04:28.390948Z", "id": "CVE-2026-14537", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-31T16:08:17.628Z" } } ] } }