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CVE-2026-63374

🗓️ 22 Sep 2026 16:17:00Reported by ubuntu.comType 
ubuntucve
 ubuntucve
🔗 ubuntu.com👁 17 Views

AnyIO prior to 4.14.2 validates hostnames using IDNA 2003, enabling certificate bypass.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
cgr
Chainguard
CVE-2026-63374 vulnerabilities
19 Sep 202614:54
–cgr
circl
Circl
CVE-2026-63374
18 Sep 202621:50
–circl
cve
CVE
CVE-2026-63374
22 Sep 202615:23
–cve
cvelist
Cvelist
CVE-2026-63374 AnyIO: TLSStream IDNA 2003 host name encoding enables potential TLS certificate spoofing
22 Sep 202615:23
–cvelist
debiancve
Debian CVE
CVE-2026-63374
22 Sep 202615:23
–debiancve
euvd
EUVD
EUVD-2026-84522
22 Sep 202615:23
–euvd
github
Github Security Blog
AnyIO: TLSStream IDNA 2003 host name encoding enables potential TLS certificate spoofing
18 Sep 202617:17
–github
mend
Mend
CVE-2026-63374
22 Sep 202615:23
–mend
nvd
NVD
CVE-2026-63374
22 Sep 202616:17
–nvd
osv
OSV
CGA-35CF-623H-MFQ9
19 Sep 202604:30
–osv
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu22.04allpython-anyio0python-anyio_0_all.deb
Ubuntu24.04allpython-anyio0python-anyio_0_all.deb
Ubuntu26.04allpython-anyio0python-anyio_0_all.deb

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23 Sep 2026 23:55Current
6Medium risk
Vulners AI Score6
CVSS 49.3
EPSS0.00289
17