CVE-2026-54775
Published:June 19, 2026
Updated:June 21, 2026
Impact A CoreWCF service is running and listening on a Kafka topic receiving a null-value record will stop processing new records from that topic. Preconditions The attacker has produce/write permission on a topic that CoreWCF is consuming from. If the broker permits anonymous publishes, no authentication is required. Patches Fixed in CoreWCF v1.8.1 and v1.9.1 Workarounds Only allow authenticated writes to a topic
Affected Packages
corewcf.kafka (DOT_NET):
Affected version(s) >=1.4.0.36 <1.8.1Fix Suggestion:
Update to version 1.8.1https://github.com/CoreWCF/CoreWCF.git (GITHUB):
Affected version(s) =v1.9.0 <v1.9.1Fix Suggestion:
Update to version v1.9.1https://github.com/CoreWCF/CoreWCF.git (GITHUB):
Affected version(s) >=v1.4.0 <v1.8.1Fix Suggestion:
Update to version v1.8.1corewcf.kafka (NUGET):
Affected version(s) >=1.4.0 <1.8.1Fix Suggestion:
Update to version 1.8.1corewcf.kafka (NUGET):
Affected version(s) =1.9.0 <1.9.1Fix Suggestion:
Update to version 1.9.1Related Resources (2)
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Contact UsCVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH