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CVE-2026-54338

🗓️ 07 Aug 2026 20:52:55Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 63 Views

CVE-2026-54338: Unauthenticated DoS in JupyterHub due to unbounded username logging on failed login.

Related
Detection
Affected
Refs
Vulners
Node
jupyterjupyterhubRange<5.5.0.
[
  {
    "vendor": "jupyterhub",
    "product": "jupyterhub",
    "versions": [
      {
        "version": "< 5.5.0JupyterHub is software that allows users to create a multi-user server for Jupyter notebooks. Prior to 5.5.0, invalid input to form-based login authenticators can place an unbounded attacker-controlled username in failed-login logs, allowing an unauthenticated attacker to consume logging and storage resources. This issue is fixed in version 5.5.0.",
        "status": "affected"
      }
    ]
  }
]

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11 Aug 2026 02:16Current
5.3Medium risk
Vulners AI Score5.3
CVSS 3.15.3
EPSS0.00282
SSVC
63