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EUVD-2026-34104

🗓️ 03 Jun 2026 15:06:56Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 2 Views

Flaw in jupyter-server 1.12.0–2.17.0 bypasses CORS origin checks with allow_origin_pat via re.match, enabling phishing and possible code execution across headers, websockets, referer, and login redirects.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
Huntr
CWE-346: CORS Origin Validation Bypass via `re.match()` in `allow_origin_pat`
26 Feb 202615:06
huntr
ATTACKERKB
CVE-2026-6657
3 Jun 202615:06
attackerkb
CVE
CVE-2026-6657
3 Jun 202615:06
cve
Cvelist
CVE-2026-6657 CORS Origin Validation Bypass in jupyter-server
3 Jun 202615:06
cvelist
NVD
CVE-2026-6657
3 Jun 202616:16
nvd
Positive Technologies
PT-2026-45961
3 Jun 202600:00
ptsecurity
Vulnrichment
CVE-2026-6657 CORS Origin Validation Bypass in jupyter-server
3 Jun 202615:06
vulnrichment
[
  {
    "enisaIdVendor": [
      {
        "id": "c1998156-6a3e-34fb-ad10-4da6a4eb9b38",
        "vendor": {
          "name": "jupyter"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "7d08e59e-d264-33a8-9192-621c6cdf87aa",
        "product": {
          "name": "jupyter/jupyter",
          "vendor": {
            "name": "jupyter"
          }
        },
        "product_version": "unspecified ≤latest"
      }
    ]
  }
]

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