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CVE-2026-54309 n8n: n8n MCP Browser HTTP Transport Exposes Unauthenticated Browser-Control Sessions

🗓️ 23 Jun 2026 15:36:13Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 86 Views

Unauthenticated browser control in n8n via web transport; fixed in two point two five point seven.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-54309
23 Jun 202615:36
–attackerkb
circl
Circl
CVE-2026-54309
1 Jul 202611:07
–circl
cve
CVE
CVE-2026-54309
23 Jun 202615:36
–cve
euvd
EUVD
EUVD-2026-38468
23 Jun 202615:36
–euvd
github
Github Security Blog
n8n: MCP Browser HTTP Transport Exposes Unauthenticated Browser-Control Sessions
16 Jun 202623:32
–github
mend
Mend
CVE-2026-54309
23 Jun 202615:36
–mend
ncsc
NCSC
Vulnerabilities handled in the n8n workflow automation platform
29 Jun 202608:02
–ncsc
nvd
NVD
CVE-2026-54309
23 Jun 202616:17
–nvd
osv_ghsa
osv_ghsa
GHSA-QRX8-25QR-5R7V n8n: MCP Browser HTTP Transport Exposes Unauthenticated Browser-Control Sessions
16 Jun 202623:32
–osv_ghsa
osv_mini
osv_mini
MINI-CGQC-J2V7-46QF
17 Jun 202616:23
–osv_mini
Rows per page
[
  {
    "vendor": "n8n-io",
    "product": "n8n",
    "versions": [
      {
        "version": ">= 2.26.0, < 2.26.2",
        "status": "affected"
      },
      {
        "version": "< 2.25.7",
        "status": "affected"
      }
    ]
  }
]

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