Medium [CVE-2026-76347] Server-Side Request Forgery (SSRF) through the Report Notifications REST API in Splunk Secure Gateway
This medium-severity Splunk advisory covers CVE-2026-76347 affecting Splunk Enterprise, Splunk Secure Gateway.
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Summary
In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, and Splunk Secure Gateway versions below 3.10.9, 3.9.23, and 3.8.70, a user who does not hold the "admin" or "power" Splunk roles could use Server-Side Request Forgery (SSRF) in report notifications to send system-authenticated requests to internal Splunk services, which could allow for changes to Search Head Cluster state and a denial of service.
The vulnerability is possible because Splunk Secure Gateway does not validate report notification path values before it sends internal requests.
- Splunk Enterprise 10.4 before 10.4.2
- Splunk Enterprise 10.2 before 10.2.6
- Splunk Enterprise 10.0 before 10.0.9
- Splunk Enterprise 9.4 before 9.4.14
- Splunk Secure Gateway 3.10 before 3.10.9
- Splunk Secure Gateway 3.9 before 3.9.23
- Splunk Secure Gateway 3.8 before 3.8.70
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
- 10.4.2
- 10.2.6
- 10.0.9
- 9.4.14
- 3.10.9
- 3.9.23
- 3.8.70
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation
Upgrade to a fixed release: 10.4.2, 10.2.6, 10.0.9, 9.4.14, 3.10.9, 3.9.23. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Discussion(0)
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