{"id":"GHSA-m744-jhq9-ppw6","summary":"CoreWCF: Kafka consume pump halts permanently on a Kafka tombstone (null-value record), causing persistent endpoint denial of service.","details":"### Impact\nA CoreWCF service is running and listening on a Kafka topic receiving a null-value record will stop processing new records from that topic.\n\n#### Preconditions\nThe attacker has produce/write permission on a topic that CoreWCF is consuming from. If the broker permits anonymous publishes, no authentication is required. \n\n### Patches\nFixed in CoreWCF v1.8.1 and v1.9.1\n\n### Workarounds\nOnly allow authenticated writes to a topic","aliases":["CVE-2026-54775"],"modified":"2026-06-19T21:11:30.272378Z","published":"2026-06-19T20:46:49Z","database_specific":{"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-06-19T20:46:49Z","nvd_published_at":null,"cwe_ids":["CWE-248","CWE-754","CWE-755"]},"references":[{"type":"WEB","url":"https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-m744-jhq9-ppw6"},{"type":"PACKAGE","url":"https://github.com/CoreWCF/CoreWCF"}],"affected":[{"package":{"name":"CoreWCF.Kafka","ecosystem":"NuGet","purl":"pkg:nuget/CoreWCF.Kafka"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.1"}]}],"versions":["1.4.0","1.4.1","1.4.2","1.5.0","1.5.0-preview1","1.5.1","1.5.2","1.6.0","1.7.0","1.8.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-m744-jhq9-ppw6/GHSA-m744-jhq9-ppw6.json"}},{"package":{"name":"CoreWCF.Kafka","ecosystem":"NuGet","purl":"pkg:nuget/CoreWCF.Kafka"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.9.0"},{"fixed":"1.9.1"}]}],"versions":["1.9.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-m744-jhq9-ppw6/GHSA-m744-jhq9-ppw6.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}