Unauthenticated Data Access in Splunk Connect for Kafka by Splunk
CVE-2026-76403

7.4HIGH

Key Information:

Vendor

Splunk
Status
Splunk Connect For Kafka
Vendor
CVE Published:
19 August 2026

What is CVE-2026-76403?

In versions of Splunk Connect for Kafka prior to 2.2.7, an unauthenticated user on the network path can potentially read or modify data transmitted through the connector. This vulnerability arises from the Kerberos authentication process, which fails to enforce the appropriate certificate validation options during the HTTP client setup. As a result, sensitive data may be exposed or altered, compromising the integrity of data sent from the connector to Splunk Enterprise when utilizing the HTTP Event Collector.

Affected Version(s)

Splunk Connect for Kafka 2.2 < 2.2.7

References

https://advisory.splunk.com/advisories/SVD-2026-0808

CVSS V3.1

Score:
7.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Pavan Saxena (RootkId)
.