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CVE-2026-63374 AnyIO: TLSStream IDNA 2003 host name encoding enables potential TLS certificate spoofing

🗓️ 22 Sep 2026 15:23:14Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 13 Views

TLS certificate spoofing in AnyIO prior to 4.14.2 via IDNA 2003 host name encoding.

Related
Affected
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
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
nvd
NVD
CVE-2026-63374
22 Sep 202616:17
nvd
osv
OSV
CGA-35CF-623H-MFQ9
19 Sep 202604:30
osv
osv
OSV
CGA-42M9-WMWX-47GJ
19 Sep 202604:00
osv
osv
OSV
CGA-4PJW-VP69-R82W
19 Sep 202603:21
osv
Rows per page
[
  {
    "vendor": "agronholm",
    "product": "anyio",
    "versions": [
      {
        "version": "< 4.14.2",
        "status": "affected"
      }
    ]
  }
]

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