PatchTheCVECVE-2026-76403: In Splunk Connect for Kafka versions below 2.2.7, an unauthenticated user positioned in the network path could
CVE-2026-76403 is a high-severity flaw (CVSS 7.4) affecting connect for kafka. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.4 (High) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 85%) |
| CISA exploited list | No |
| Weakness | CWE-295 |
| Published | 2026-08-19 |
| Last modified | 2026-08-24 |
Last updated 2026-08-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-76403?
connect for kafka: upgrade to 2.2.7. Exact commands for each OS are on this page.
Is CVE-2026-76403 being exploited?
CVE-2026-76403 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-76403 affect?
CVE-2026-76403 affects connect for kafka. Severity is high (CVSS 7.4). 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 (HT
How urgent is CVE-2026-76403?
Priority 35/100. High severity; Remotely exploitable, no login, no user action
Software pages
Splunk vulnerabilities · Apache Kafka vulnerabilities
Related CVEs
- CVE-2026-76400 MEDIUM 5.9 UPGRADE In Splunk Connect for Kafka versions below 2.2.7, an unauthenticated user who can reach the Kafka Connect Repr
- CVE-2026-76401 MEDIUM 5.9 UPGRADE In Splunk Connect for Kafka versions below 2.2.7, an unauthenticated user who can reach the Kafka Connect Repr
- CVE-2026-76402 HIGH 8.2 UPGRADE In Splunk Connect for Kafka versions below 2.2.7, an unauthenticated user who can reach the Kafka Connect Repr