Remote code execution vulnerability in Splunk Connect for Kafka by Splunk
CVE-2026-76401

5.9MEDIUM

Key Information:

Vendor

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

What is CVE-2026-76401?

An unauthenticated user with access to the Kafka Connect REST API in Splunk Connect for Kafka versions prior to 2.2.7 can exploit a flaw in timestamp extraction. This allows the user to submit crafted regular expressions that can cause a Kafka Connect worker thread to hang, thereby disrupting event delivery for the affected connector. The issue arises from the lack of time constraints in evaluating user-supplied regular expressions, presenting a significant risk to the operation of Kafka connectors.

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:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Gabriel Nitu, Splunk
.