High [CVE-2026-76290] Denial of Service (DoS) through Unauthenticated Package Downloads over the REST API in Splunk Enterprise
This high-severity Splunk advisory covers CVE-2026-76290 affecting Splunk Enterprise.
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Summary
In Splunk Enterprise versions below 10.4.4, 10.2.8, and 10.0.11, an unauthenticated user could send repeated requests to the Edge Processor package download endpoint in the Splunk Pipeline Builders app. The requests could cause the Splunk daemon to consume excessive system resources and potentially stop responding.
The vulnerability is possible because the endpoint accepts package download requests without authentication and reads and base64-encodes the complete package in memory for each request. After upgrading, prepare all existing Edge Processor instances, turn on authentication for Edge Processor package downloads, and restart Splunk Enterprise.
For more information, see Enable authentication for Edge Processor package downloads ( ).
- Splunk Enterprise 10.4 before 10.4.4
- Splunk Enterprise 10.2 before 10.2.8
- Splunk Enterprise 10.0 before 10.0.11
Official advisory · high-confidence parse· fetched 7 hours ago·verify at source
- 10.4.4
- 10.2.8
- 10.0.11
Official advisory · high-confidence parse· fetched 7 hours ago·verify at source
Mitigation checklist
- For more information, see Enable authentication for Edge Processor package downloads (https://help.splunk.com/en/data-management/process-data-at-the-edge/use-edge-processors-for-splunk-enterprise/10.4/administer-edge-processors/enable-authentication-for-edge-processor-package-downloads).
Official advisory · high-confidence parse· fetched 7 hours ago·verify at source
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