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CVE-2026-54338

🗓️ 07 Aug 2026 21:17:00Reported by ubuntu.comType 
ubuntucve
 ubuntucve
🔗 ubuntu.com👁 3 Views

JupyterHub before 5.5.0 allows unbounded username in failed-login logs, enabling resource exhaustion.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-54338
7 Aug 202620:52
attackerkb
cve
CVE
CVE-2026-54338
7 Aug 202620:52
cve
cvelist
Cvelist
CVE-2026-54338 JupyterHub: Unauthenticated Denial of Service via Unbounded Username Logging on Failed Login
7 Aug 202620:52
cvelist
debiancve
Debian CVE
CVE-2026-54338
7 Aug 202620:52
debiancve
euvd
EUVD
EUVD-2026-54678
7 Aug 202620:52
euvd
nvd
NVD
CVE-2026-54338
7 Aug 202621:17
nvd
osv
OSV
DEBIAN-CVE-2026-54338
7 Aug 202621:17
osv
osv
OSV
UBUNTU-CVE-2026-54338
7 Aug 202621:17
osv
ptsecurity
Positive Technologies
PT-2026-69151
7 Aug 202600:00
ptsecurity
snyk
Snyk
Logging of Excessive Data
7 Aug 202623:42
snyk
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu22.04alljupyterhub0jupyterhub_0_all.deb
Ubuntu24.04alljupyterhub0jupyterhub_0_all.deb
Ubuntu26.04alljupyterhub0jupyterhub_0_all.deb

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13 Aug 2026 20:05Current
5.3Medium risk
Vulners AI Score5.3
CVSS 3.15.3
EPSS0.00282
SSVC
3