160 lines
6.8 KiB
JSON
160 lines
6.8 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-14541",
|
|
"assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Google",
|
|
"dateReserved": "2026-07-03T03:38:02.749Z",
|
|
"datePublished": "2026-07-31T01:48:39.019Z",
|
|
"dateUpdated": "2026-07-31T16:14:54.005Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "14ed7db2-1595-443d-9d34-6215bf890778",
|
|
"shortName": "Google",
|
|
"dateUpdated": "2026-07-31T01:48:39.019Z"
|
|
},
|
|
"title": "Authentication Bypass and Audience Confusion in MCP Toolbox OAuth Provider",
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"cweId": "CWE-287",
|
|
"description": "CWE-287 (Improper Authentication)",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"impacts": [
|
|
{
|
|
"capecId": "CAPEC-115",
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "CAPEC-115 Authentication Bypass"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"vendor": "Google",
|
|
"product": "mcp-toolbox",
|
|
"versions": [
|
|
{
|
|
"status": "affected",
|
|
"version": "1.4.0",
|
|
"versionType": "semver"
|
|
}
|
|
],
|
|
"defaultStatus": "unaffected"
|
|
}
|
|
],
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "An authentication bypass and audience confusion vulnerability exists in the Google OAuth provider component of Google mcp-toolbox version 1.4.0. When a Google authService is initialized with mcpEnabled: true but lacks an explicitly defined audience or clientId, the ValidateMCPAuth pipeline for opaque tokens skips audience validation entirely. As a result, the toolbox will accept any valid Google OAuth access token—even those minted for unrelated ecosystem applications—granting unauthorized clients access to protected tools and data backends.",
|
|
"supportingMedia": [
|
|
{
|
|
"type": "text/html",
|
|
"base64": false,
|
|
"value": "An authentication bypass and audience confusion vulnerability exists in the Google OAuth provider component of Google mcp-toolbox version 1.4.0. When a Google authService is initialized with mcpEnabled: true but lacks an explicitly defined audience or clientId, the ValidateMCPAuth pipeline for opaque tokens skips audience validation entirely. As a result, the toolbox will accept any valid Google OAuth access token—even those minted for unrelated ecosystem applications—granting unauthorized clients access to protected tools and data backends."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://github.com/googleapis/mcp-toolbox/pull/3450"
|
|
}
|
|
],
|
|
"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": "NONE",
|
|
"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,
|
|
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U"
|
|
}
|
|
}
|
|
],
|
|
"credits": [
|
|
{
|
|
"lang": "en",
|
|
"value": "HE WEI (ギカク)",
|
|
"type": "finder"
|
|
}
|
|
],
|
|
"source": {
|
|
"discovery": "UNKNOWN"
|
|
},
|
|
"x_generator": {
|
|
"engine": "Vulnogram 1.0.2"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-07-31T16:14:40.882881Z",
|
|
"id": "CVE-2026-14541",
|
|
"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": "2026-07-31T16:14:54.005Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |