{"id":"CVE-2026-54772","summary":"CoreWCF: Pre-authentication infinite-loop CPU exhaustion in CoreWCF net.tcp / net.pipe / net.uds framing handshake","details":"CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. Prior to 1.8.1 and 1.9.1, an unauthenticated remote attacker that can reach a NetTcpBinding, NetNamedPipeBinding, or UnixDomainSocketBinding endpoint can trigger premature EOF handling in the CoreWCF net.tcp, net.pipe, or net.uds framing handshake and pin one server thread-pool worker at full CPU per connection. This issue is fixed in versions 1.8.1 and 1.9.1.","aliases":["GHSA-p86g-xrr2-pf7c"],"modified":"2026-07-15T01:49:19.097285700Z","published":"2026-07-08T22:06:08.914Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-400","CWE-835"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54772.json"},"references":[{"type":"WEB","url":"https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1"},{"type":"WEB","url":"https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54772.json"},{"type":"ADVISORY","url":"https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-p86g-xrr2-pf7c"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54772"},{"type":"FIX","url":"https://github.com/CoreWCF/CoreWCF/commit/03ddbced349931a2da6c0efcdf745c0722eff77c"},{"type":"FIX","url":"https://github.com/CoreWCF/CoreWCF/commit/7ddd966d6e58564a32ab30c825dd693b45a34a55"},{"type":"FIX","url":"https://github.com/CoreWCF/CoreWCF/commit/c4212988cd6fd472783d0413426eeac61044097a"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/corewcf/corewcf","events":[{"introduced":"39b2f02978e497955a560c72b5ccdff5c0dbcda1"},{"introduced":"0"},{"fixed":"1f7a0811da5128db40fd7b868ae0aac0c581f91f"},{"fixed":"7c0920fe16adc497efae82881ac0f1e4d7ac98d0"},{"fixed":"03ddbced349931a2da6c0efcdf745c0722eff77c"},{"fixed":"7ddd966d6e58564a32ab30c825dd693b45a34a55"},{"fixed":"c4212988cd6fd472783d0413426eeac61044097a"}],"database_specific":{"extracted_events":[{"introduced":"1.9.0"},{"fixed":"1.9.1"},{"introduced":"0"},{"fixed":"1.8.1"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v1.8.0","v1.9.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54772.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}