CVE-2026-76290 Denial of Service (DoS) through Unauthenticated Package Downloads over the REST API in Splunk Enterprise
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-76290?
CVE-2026-76290 is a high-severity vulnerability in Splunk Enterprise, published on 21 Oct 2026.
Official description
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 (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).
Weakness: CWE-400
Which versions are affected by CVE-2026-76290?
How do I fix CVE-2026-76290?
No fix has been published for CVE-2026-76290 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-76290 being exploited?
There is no known exploitation of CVE-2026-76290 in the wild and no public exploit code.
Sources
Also known as GHSA-xj2g-87r9-g689.