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
2026-07-08T22:13:37.611Z
Modified
2026-07-11T03:54:27.635091472Z
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 
{
    "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

Affected packages

Git / github.com/corewcf/corewcf

Affected ranges

Type
GIT
Repo
https://github.com/corewcf/corewcf
Events
Introduced
39b2f02978e497955a560c72b5ccdff5c0dbcda1
Introduced
0 Unknown introduced commit / All previous commits are affected
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"
        }
    ]
}

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"