Data disclosure and tampering via skipped cert checks
Published Aug 19, 2026 · Updated Aug 20, 2026
Improper certificate validation in Splunk Connect for Kafka before 2.2.7 allows man-in-the-middle attackers to read or alter HTTP Event Collector traffic. In the Kerberos-authenticated HTTP Event Collector path, the connector builds its HTTP client without applying the configured certificate-validation settings, so the remote endpoint is not verified as configured. Exposure requires Kerberos authentication to Splunk Enterprise HEC and an attacker positioned on the network path; the impact is limited to data confidentiality and integrity in transit, with no published code-execution path.
Summary
What happened
Improper certificate validation in Splunk Connect for Kafka before 2.2.7 allows man-in-the-middle attackers to read or alter HTTP Event Collector traffic. In the Kerberos-authenticated HTTP Event Collector path, the connector builds its HTTP client without applying the configured certificate-validation settings, so the remote endpoint is not verified as configured. Exposure requires Kerberos authentication to Splunk Enterprise HEC and an attacker positioned on the network path; the impact is limited to data confidentiality and integrity in transit, with no published code-execution path.
The record
- CVE
- CVE-2026-76403
- Published
- Aug 19, 2026
- Updated
- Aug 20, 2026
- Vendor
- Zoom Video Communications, Inc.
- Product
- Splunk Connect for Kafka
- Classifications
- CWE-295, T1557
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 19, 2026CVE publishedPublication date reported by the CVE source.
- Aug 20, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.2 <2.2.7
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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