CVE-2026-54775

{"id": "CVE-2026-54775", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-54775", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-09T14:20:22.314924Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "CoreWCF", "product": "CoreWCF", "versions": [{"status": "affected", "version": ">= 1.9.0, < 1.9.1"}, {"status": "affected", "version": "< 1.8.1"}]}]}], "published": "2026-07-08T23:16:55.227", "references": [{"url": "https://github.com/CoreWCF/CoreWCF/commit/1a229d0d14a07766302f7d14c866889f04a3a624", "source": "security-advisories@github.com"}, {"url": "https://github.com/CoreWCF/CoreWCF/commit/6d7431ebc0ebe6521ea6d0dbea8982bac3d2bc98", "source": "security-advisories@github.com"}, {"url": "https://github.com/CoreWCF/CoreWCF/commit/8f95f3ac3c929409e830b5c5659683ef9f6ea6b0", "source": "security-advisories@github.com"}, {"url": "https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1", "source": "security-advisories@github.com"}, {"url": "https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1", "source": "security-advisories@github.com"}, {"url": "https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-m744-jhq9-ppw6", "source": "security-advisories@github.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-248"}, {"lang": "en", "value": "CWE-754"}, {"lang": "en", "value": "CWE-755"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-07-09T16:29:14.203", "sourceIdentifier": "security-advisories@github.com"}