{
"id": "GHSA-p86g-xrr2-pf7c",
"aliases": [
"CVE-2026-54772"
],
"details": "### Impact\nAn unauthenticated remote attacker can pin one server thread‑pool worker at 100 % CPU per connection. With a few connections, the CPU usage can be exhausted.\n\n#### Preconditions\nAn attacker being able to reach a service which is exposing an endpoint using one of NetTcpBinding, NetNamedPipeBinding, or UnixDomainSocketBinding.\n\n### Patches\nFixed in CoreWCF v1.8.1 and v1.9.1\n\n### Workarounds\nNone",
"summary": "CoreWCF: Pre-authentication infinite-loop CPU exhaustion in CoreWCF net.tcp / net.pipe / net.uds framing handshake",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.8.1"
}
]
}
],
"package": {
"name": "CoreWCF.NetFramingBase",
"ecosystem": "NuGet"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "1.9.0"
},
{
"fixed": "1.9.1"
}
]
}
],
"package": {
"name": "CoreWCF.NetFramingBase",
"ecosystem": "NuGet"
}
}
],
"modified": "2026-06-19T20:46:40Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"published": "2026-06-19T20:46:40Z",
"references": [
{
"url": "https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-p86g-xrr2-pf7c",
"type": "WEB"
},
{
"url": "https://github.com/CoreWCF/CoreWCF",
"type": "PACKAGE"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-835"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": null,
"github_reviewed_at": "2026-06-19T20:46:40Z"
}
}