Vulnerability Details CVE-2026-76401
In Splunk Connect for Kafka versions below 2.2.7, an unauthenticated user who can reach the Kafka Connect Representational State Transfer (REST) API could configure timestamp extraction with a crafted regular expression and matching event data to block a Kafka Connect worker thread, stopping event delivery for the affected connector. The vulnerability is possible because timestamp extraction evaluates customer-supplied regular expressions without a time limit. For more information see Install Splunk Connect for Kafka (https://help.splunk.com/en/data-management/integrate-data-with-add-ons/splunk-connect-for-kafka/2.2/install/install-splunk-connect-for-kafka) and Data ingestion parameters for Splunk Connect for Kafka (https://help.splunk.com/en/data-management/integrate-data-with-add-ons/splunk-connect-for-kafka/2.2/overview/data-ingestion-parameters-for-splunk-connect-for-kafka) in the Splunk documentation.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 20.4%
CVSS Severity
CVSS v3 Score 5.9
Products affected by CVE-2026-76401
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cpe:2.3:a:splunk:connect_for_kafka:1.0.0
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cpe:2.3:a:splunk:connect_for_kafka:1.1.0
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cpe:2.3:a:splunk:connect_for_kafka:1.1.1
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cpe:2.3:a:splunk:connect_for_kafka:1.2.0
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cpe:2.3:a:splunk:connect_for_kafka:2.0.0
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cpe:2.3:a:splunk:connect_for_kafka:2.0.1
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cpe:2.3:a:splunk:connect_for_kafka:2.0.2
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cpe:2.3:a:splunk:connect_for_kafka:2.0.3
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cpe:2.3:a:splunk:connect_for_kafka:2.0.4
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cpe:2.3:a:splunk:connect_for_kafka:2.0.5
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cpe:2.3:a:splunk:connect_for_kafka:2.0.6
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cpe:2.3:a:splunk:connect_for_kafka:2.0.7
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cpe:2.3:a:splunk:connect_for_kafka:2.0.8
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cpe:2.3:a:splunk:connect_for_kafka:2.0.9
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cpe:2.3:a:splunk:connect_for_kafka:2.1.0
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cpe:2.3:a:splunk:connect_for_kafka:2.1.1
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cpe:2.3:a:splunk:connect_for_kafka:2.1.2
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cpe:2.3:a:splunk:connect_for_kafka:2.2.0
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cpe:2.3:a:splunk:connect_for_kafka:2.2.1
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cpe:2.3:a:splunk:connect_for_kafka:2.2.2
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cpe:2.3:a:splunk:connect_for_kafka:2.2.3
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cpe:2.3:a:splunk:connect_for_kafka:2.2.4
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cpe:2.3:a:splunk:connect_for_kafka:2.2.5
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cpe:2.3:a:splunk:connect_for_kafka:2.2.6