CVE-2026-66012
🗓️ 25 Jul 2026 10:45:56Reported by VulnCheckType 
cve🔗 web.nvd.nist.gov📰️ 1 Media mentions👁 71 Views🌐 WEB
| Reporter | Title | Published | Views | Family All 10 |
|---|---|---|---|---|
 | Exploit for CVE-2026-66012 | 26 Jul 202610:45 | – | githubexploit |
 | CVE-2026-66012 | 25 Jul 202610:45 | – | attackerkb |
 | CVE-2026-66012 | 25 Jul 202611:26 | – | circl |
 | CVE-2026-66012 SiYuan before v3.7.2 Unauthenticated Administrator Takeover via MCP | 25 Jul 202610:45 | – | cvelist |
 | EUVD-2026-49043 | 25 Jul 202610:45 | – | euvd |
 | siyuan-mcp-admin-takeover-cve-2026-66012-missing-authorization | 2 Sep 202610:37 | – | kitploit |
 | CVE-2026-66012 | 25 Jul 202611:17 | – | nvd |
 | 📄 SiYuan 3.7.1 Authentication Bypass / Arbitrary File Write | 3 Aug 202600:00 | – | packetstorm |
 | PT-2026-64762 | 25 Jul 202600:00 | – | ptsecurity |
 | CVE-2026-66012 SiYuan before v3.7.2 Unauthenticated Administrator Takeover via MCP | 25 Jul 202610:45 | – | vulnrichment |
Node
[
{
"vendor": "siyuan-note",
"product": "siyuan",
"defaultStatus": "unaffected",
"packageURL": "pkg:npm/github.com/siyuan-note/siyuan",
"versions": [
{
"version": "0",
"status": "affected",
"versionType": "semver",
"lessThan": "3.7.2"
},
{
"version": "3.7.2",
"status": "unaffected",
"versionType": "semver"
}
]
}
]| Parameter | Position | Path | Description | CWE |
|---|---|---|---|---|
| tools/list | request body | mcp | Unauthenticated access to POST /mcp allows invoking MCP tools without admin checks (missing authorization). | CWE-862 |
| tools/call | request body | mcp | Unauthenticated access to POST /mcp allows invoking MCP tools without admin checks (missing authorization). | CWE-862 |
| name | request body | mcp | Unauthenticated access to POST /mcp allows invoking MCP tools without admin checks (missing authorization). | CWE-862 |
| arguments | request body | mcp | Unauthenticated access to POST /mcp allows invoking MCP tools without admin checks (missing authorization). | CWE-862 |
| path | request body | mcp | Unauthenticated access to POST /mcp allows invoking MCP tools without admin checks (missing authorization). | CWE-862 |
| action | request body | mcp | Unauthenticated access to POST /mcp allows invoking MCP tools without admin checks (missing authorization). | CWE-862 |
| read | request body | mcp | Unauthenticated access to POST /mcp allows invoking MCP tools without admin checks (missing authorization). | CWE-862 |
| write | request body | mcp | Unauthenticated access to POST /mcp allows invoking MCP tools without admin checks (missing authorization). | CWE-862 |
| delete | request body | mcp | Unauthenticated access to POST /mcp allows invoking MCP tools without admin checks (missing authorization). | CWE-862 |
| rename | request body | mcp | Unauthenticated access to POST /mcp allows invoking MCP tools without admin checks (missing authorization). | CWE-862 |
10
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28 Jul 2026 16:07Current
6Medium risk
Vulners AI Score6
CVSS 410
CVSS 3.110
EPSS0.00553
SSVC