CVE-2026-76403 (GCVE-0-2026-76403)
Vulnerability from cvelistv5
Published
2026-08-19 21:35
Modified
2026-08-20 15:26
CWE
  • CWE-295 - The software does not validate, or incorrectly validates, a certificate.
Summary
In Splunk Connect for Kafka versions below 2.2.7, an unauthenticated user positioned in the network path could read or alter all relevant data sent from the connector when Kerberos authentication is used with Hypertext Transfer Protocol (HTTP) Event Collector in Splunk Enterprise. The vulnerability is possible because the Kerberos authentication path does not apply the configured certificate validation options when it builds the HTTP client. 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), Security configurations for Splunk Connect for Kafka (https://help.splunk.com/en/splunk-enterprise/get-data-in/splunk-connect-for-kafka/2.2/configure/security-configurations-for-splunk-connect-for-kafka), and Set up and use HTTP Event Collector with configuration files (https://help.splunk.com/en/splunk-enterprise/get-data-in/get-started-with-getting-data-in/9.4/get-data-with-http-event-collector/set-up-and-use-http-event-collector-with-configuration-files) in the Splunk documentation.
Impacted products
Vendor Product Version
Splunk Splunk Connect for Kafka Version: 2.2   < 2.2.7
Create a notification for this product.
Show details on NVD website


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                "id": "CVE-2026-76403",
                "options": [
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-20T15:09:36.116444Z",
                "version": "2.0.3"
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          "vendor": "Splunk",
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      "credits": [
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          "lang": "en",
          "type": "reporter",
          "value": "Pavan Saxena (RootkId)"
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      "descriptions": [
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              "value": "In Splunk Connect for Kafka versions below 2.2.7, an unauthenticated user positioned in the network path could read or alter all relevant data sent from the connector when Kerberos authentication is used with Hypertext Transfer Protocol (HTTP) Event Collector in Splunk Enterprise. The vulnerability is possible because the Kerberos authentication path does not apply the configured certificate validation options when it builds the HTTP client. 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), [Security configurations for Splunk Connect for Kafka](https://help.splunk.com/en/splunk-enterprise/get-data-in/splunk-connect-for-kafka/2.2/configure/security-configurations-for-splunk-connect-for-kafka), and [Set up and use HTTP Event Collector with configuration files](https://help.splunk.com/en/splunk-enterprise/get-data-in/get-started-with-getting-data-in/9.4/get-data-with-http-event-collector/set-up-and-use-http-event-collector-with-configuration-files) in the Splunk documentation."
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      "references": [
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          "value": "Upgrade each affected Splunk app or add-on to the applicable fixed version listed in Product Status."
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      "source": {
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      "title": "Improper Certificate Validation through HTTP Event Collector Kerberos Authentication in Splunk Connect for Kafka",
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