{"id":"CVE-2026-54775","summary":"CoreWCF: Kafka consume pump halts permanently on a Kafka tombstone (null-value record), causing persistent endpoint denial of service.","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, a CoreWCF service listening on a Kafka topic stops processing new records from that topic when KafkaTransportPump receives a null-value tombstone record, causing a persistent endpoint denial of service for attackers with produce permission. This issue is fixed in versions 1.8.1 and 1.9.1.","aliases":["GHSA-m744-jhq9-ppw6"],"modified":"2026-07-11T03:54:27.635091472Z","published":"2026-07-08T22:13:37.611Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54775.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-248","CWE-754","CWE-755"]},"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-2026-54775.json"},{"type":"ADVISORY","url":"https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-m744-jhq9-ppw6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54775"},{"type":"FIX","url":"https://github.com/CoreWCF/CoreWCF/commit/1a229d0d14a07766302f7d14c866889f04a3a624"},{"type":"FIX","url":"https://github.com/CoreWCF/CoreWCF/commit/6d7431ebc0ebe6521ea6d0dbea8982bac3d2bc98"},{"type":"FIX","url":"https://github.com/CoreWCF/CoreWCF/commit/8f95f3ac3c929409e830b5c5659683ef9f6ea6b0"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/corewcf/corewcf","events":[{"introduced":"39b2f02978e497955a560c72b5ccdff5c0dbcda1"},{"introduced":"0"},{"fixed":"1f7a0811da5128db40fd7b868ae0aac0c581f91f"},{"fixed":"7c0920fe16adc497efae82881ac0f1e4d7ac98d0"},{"fixed":"1a229d0d14a07766302f7d14c866889f04a3a624"},{"fixed":"6d7431ebc0ebe6521ea6d0dbea8982bac3d2bc98"},{"fixed":"8f95f3ac3c929409e830b5c5659683ef9f6ea6b0"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"1.9.0"},{"fixed":"1.9.1"},{"introduced":"0"},{"fixed":"1.8.1"}]}}],"versions":["v1.8.0","v1.9.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54775.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}