CVE-2026-54775

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Source
https://cve.org/CVERecord?id=CVE-2026-54775
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54775.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-54775
Aliases
Published
2026-07-08T22:13:37Z
Modified
2026-10-28T02:31:03Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-248",
        "CWE-754",
        "CWE-755"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54775.json"
}
References

Affected packages

Git / github.com/corewcf/corewcf

Affected ranges

Type
GIT
Repo
https://github.com/corewcf/corewcf
Events
Introduced
39b2f02978e497955a560c72b5ccdff5c0dbcda1
Fixed
1f7a0811da5128db40fd7b868ae0aac0c581f91f
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
7c0920fe16adc497efae82881ac0f1e4d7ac98d0
Fixed
1a229d0d14a07766302f7d14c866889f04a3a624
Fixed
6d7431ebc0ebe6521ea6d0dbea8982bac3d2bc98
Fixed
8f95f3ac3c929409e830b5c5659683ef9f6ea6b0
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "1.9.0"
                },
                {
                    "fixed":  "1.9.1"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.8.1"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "1a229d0d14a07766302f7d14c866889f04a3a624"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "range":  [
                {
                    "fixed":  "6d7431ebc0ebe6521ea6d0dbea8982bac3d2bc98"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "range":  [
                {
                    "fixed":  "8f95f3ac3c929409e830b5c5659683ef9f6ea6b0"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v1.8.1",
            "range":  [
                {
                    "fixed":  "7c0920fe16adc497efae82881ac0f1e4d7ac98d0"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "original_tag":  "v1.9.1",
            "range":  [
                {
                    "fixed":  "1f7a0811da5128db40fd7b868ae0aac0c581f91f"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

v1.*
v1.8.0
v1.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54775.json"