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CVE-2026-19553 SSLContext.wrap_bio() missing validation of server_hostname parameter

🗓️ 30 Sep 2026 16:17:39Reported by PSFType 
cvelist
 cvelist
🔗 www.cve.org👁 3 Views

Missing validation of server_hostname in SSLContext.wrap_bio() skips hostname verification.

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Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-19553
30 Sep 202616:17
–cve
euvd
EUVD
EUVD-2026-90078
30 Sep 202616:17
–euvd
nvd
NVD
CVE-2026-19553
30 Sep 202617:16
–nvd
[
  {
    "defaultStatus": "unaffected",
    "modules": [
      "ssl"
    ],
    "product": "CPython",
    "repo": "https://github.com/python/cpython",
    "vendor": "Python Software Foundation",
    "versions": [
      {
        "lessThan": "3.16.0",
        "status": "affected",
        "version": "0",
        "versionType": "python"
      }
    ]
  }
]

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