High [CVE-2026-76356] Authentication Bypass through IP Address Spoofing in the Automation Broker in Splunk SOAR
This high-severity Splunk advisory covers CVE-2026-76356 affecting Splunk SOAR.
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Summary
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 ( ) in the Splunk documentation.
- Splunk SOAR 8.6 before 8.6.0
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation
Upgrade to a fixed release: 8.6.0. 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 2 months ago·verify at source
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