CVE-2026-19445 Use-after-free of a server-side SSLContext when sni_callback switches contexts
10
[
{
"defaultStatus": "unaffected",
"modules": [
"ssl"
],
"product": "CPython",
"repo": "https://github.com/python/cpython",
"vendor": "Python Software Foundation",
"versions": [
{
"version": "0",
"lessThan": "3.10.22",
"status": "affected",
"versionType": "python"
},
{
"version": "3.11.0",
"lessThan": "3.11.17",
"status": "affected",
"versionType": "python"
},
{
"version": "3.12.0",
"lessThan": "3.12.15",
"status": "affected",
"versionType": "python"
},
{
"version": "3.13.0",
"lessThan": "3.13.16",
"status": "affected",
"versionType": "python"
},
{
"version": "3.14.0",
"lessThan": "3.14.8",
"status": "affected",
"versionType": "python"
},
{
"version": "3.15.0a1",
"lessThan": "3.15.0rc3",
"status": "affected",
"versionType": "python"
}
]
}
]Data
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03 Oct 2026 00:36Current
CVSS 49.2
EPSS0.00429