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vuln-cve/data/2026/77xxx/CVE-2026-77518.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-77518",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-08-20T20:23:02.507Z",
"datePublished": "2026-09-21T20:36:26.835Z",
"dateUpdated": "2026-09-22T13:19:07.350Z"
},
"containers": {
"cna": {
"title": "MaxKB: Known MCP tool IDs expose owner Tool.code and can be referenced by attacker workflows",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"lang": "en",
"description": "CWE-862: Missing Authorization",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-x65c-w438-c58f",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-x65c-w438-c58f"
}
],
"affected": [
{
"vendor": "1Panel-dev",
"product": "MaxKB",
"versions": [
{
"version": "<= 2.10.2-lts",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-09-21T20:36:26.835Z"
},
"descriptions": [
{
"lang": "en",
"value": "MaxKB is an open-source AI assistant for enterprise. In 2.10.2-lts and earlier, a normal workspace user who knows another user's active MCP tool_id in the same workspace can retrieve the hidden tool through the tool-detail route because it does not apply the per-resource authorization used by the list route. The response includes Tool.code, which may contain MCP server configuration and headers, and an attacker who can create or edit an attacker-owned workflow can place the same foreign mcp_tool_id in a workflow mcp-node so workflow debug uses the owner's MCP configuration without verifying permission to use that tool. No fixed version is available as of this review."
}
],
"source": {
"advisory": "GHSA-x65c-w438-c58f",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-09-22T13:18:30.466549Z",
"id": "CVE-2026-77518",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-09-22T13:19:07.350Z"
}
}
]
}
}