What’s Vulnerable › Vulnerabilities
CVE-2026-76356: Authentication Bypass through IP Address Spoofing in the Automation Broker in Splunk SOAR
- Severity: high (CVSS 8.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.6% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-19 · updated 2026-08-27
- Weakness: CWE-290
Description
In Splunk SOAR versions below 8.6.0, an unauthenticated user could spoof the source IP address in a crafted request to an Automation Broker notification endpoint and execute arbitrary code on the Splunk SOAR host. The vulnerability is possible because the Splunk SOAR Automation Broker trusts a client-supplied source IP address header as proof that the request originates from the local system. Successful exploitation can expose all relevant data, affect system integrity, and disrupt service availability. For more information see About Splunk SOAR Automation Broker (https://help.splunk.com/en/splunk-soar/splunk-automation-broker/about-splunk-soar-automation-broker/about-splunk-soar-automation-broker) in the Splunk documentation.
Affected products
- Splunk SOAR: before 8.6.0 — fixed in 8.6.0
How to fix
Upgrade to a fixed version: Splunk SOAR 8.6.0. Check the vendor advisory for mitigations.
References
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