CVE-2026-76400: The software does not properly control the allocation and maintenance of a limited resource thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. in Splunk Splunk Connect for Kafka
CVE-2026-76400 is a medium severity vulnerability in Splunk Connect for Kafka versions below 2.2.7. It allows an unauthenticated user with access to the Kafka Connect REST API to cause resource exhaustion by triggering unbounded retries of failed event batches due to improper retry limit handling in HTTP Event Collector delivery. This can lead to denial of service by exhausting available resources.
AI Analysis
Technical Summary
In Splunk Connect for Kafka versions below 2.2.7, the software does not properly limit retries for failed event batches when delivering data to the HTTP Event Collector endpoint in Splunk Enterprise. An unauthenticated actor who can reach the Kafka Connect REST API and manipulate HTTP Event Collector responses can cause the connector to retry indefinitely, consuming excessive resources until exhaustion occurs. The root cause is the use of an unbounded default retry limit instead of a finite retry count.
Potential Impact
The vulnerability can lead to denial of service by exhausting system resources on the Splunk Connect for Kafka connector, potentially disrupting data ingestion pipelines. There is no impact on confidentiality or integrity reported. The attack requires network access to the Kafka Connect REST API and the ability to influence HTTP Event Collector responses.
Mitigation Recommendations
No official patch or remediation level is currently confirmed. Users should upgrade to version 2.2.7 or later when available, as the vulnerability affects versions below 2.2.7. Until a fix is applied, restrict network access to the Kafka Connect REST API to trusted users only to reduce exposure. Monitor vendor advisories for official patches or updates.
CVE-2026-76400: The software does not properly control the allocation and maintenance of a limited resource thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. in Splunk Splunk Connect for Kafka
Description
CVE-2026-76400 is a medium severity vulnerability in Splunk Connect for Kafka versions below 2.2.7. It allows an unauthenticated user with access to the Kafka Connect REST API to cause resource exhaustion by triggering unbounded retries of failed event batches due to improper retry limit handling in HTTP Event Collector delivery. This can lead to denial of service by exhausting available resources.
CVSS v3.1
Score 5.9medium
Affected software
pkg:maven/com.splunk/splunk-connect-for-kafkaRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
In Splunk Connect for Kafka versions below 2.2.7, the software does not properly limit retries for failed event batches when delivering data to the HTTP Event Collector endpoint in Splunk Enterprise. An unauthenticated actor who can reach the Kafka Connect REST API and manipulate HTTP Event Collector responses can cause the connector to retry indefinitely, consuming excessive resources until exhaustion occurs. The root cause is the use of an unbounded default retry limit instead of a finite retry count.
Potential Impact
The vulnerability can lead to denial of service by exhausting system resources on the Splunk Connect for Kafka connector, potentially disrupting data ingestion pipelines. There is no impact on confidentiality or integrity reported. The attack requires network access to the Kafka Connect REST API and the ability to influence HTTP Event Collector responses.
Mitigation Recommendations
No official patch or remediation level is currently confirmed. Users should upgrade to version 2.2.7 or later when available, as the vulnerability affects versions below 2.2.7. Until a fix is applied, restrict network access to the Kafka Connect REST API to trusted users only to reduce exposure. Monitor vendor advisories for official patches or updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- cisco
- Date Reserved
- 2026-08-19T12:02:03.632Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a862261acd9273b49a7049d
Added to database: 08/19/2026, 21:38:41 UTC
Last enriched: 08/19/2026, 21:53:16 UTC
Last updated: 08/20/2026, 01:39:30 UTC
Views: 6
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