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EUVD-2026-49043

🗓️ 25 Jul 2026 10:45:56Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 32 Views

SiYuan before v3.7.2 allows unauthenticated access to /mcp via a weak auth check, exposing tools, config data, and enabling hostile plugin planting.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
githubexploit
GithubExploit
Exploit for CVE-2026-66012
26 Jul 202610:45
–githubexploit
attackerkb
attackerkb
CVE-2026-66012
25 Jul 202610:45
–attackerkb
circl
Circl
CVE-2026-66012
25 Jul 202611:26
–circl
cve
CVE
CVE-2026-66012
25 Jul 202610:45
–cve
cvelist
Cvelist
CVE-2026-66012 SiYuan before v3.7.2 Unauthenticated Administrator Takeover via MCP
25 Jul 202610:45
–cvelist
github
Github Security Blog
SiYuan MCP asset.upload Reads Arbitrary Absolute File Paths (Workspace Boundary Bypass)
2 Oct 202623:16
–github
kitploit
Kitploit
siyuan-mcp-admin-takeover-cve-2026-66012-missing-authorization
15 Oct 202615:21
–kitploit
kittysploit
KittySploit
SiYuan MCP Auth Bypass (CVE-2026-66012)
8 Aug 202616:40
–kittysploit
kittysploit
KittySploit
SiYuan CVE-2026-66012 MCP Auth Bypass Detect
8 Aug 202616:40
–kittysploit
mend
Mend
CVE-2026-66012
25 Jul 202610:45
–mend
Rows per page
[
  {
    "enisaIdVendor": [
      {
        "id": "b644f4fe-01ec-309a-9854-b99275c0d0a9",
        "vendor": {
          "name": "siyuan-note"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "63cb24af-2b5f-3bbc-a4ea-a4512bd39a31",
        "product": {
          "name": "SiYuan",
          "vendor": {
            "name": "siyuan-note"
          }
        },
        "product_version": "0 <3.7.2"
      }
    ]
  }
]

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25 Jul 2026 10:45Current
6.1Medium risk
Vulners AI Score6.1
CVSS 410
CVSS 3.110
EPSS0.00764
32