CVE-2026-76356 (GCVE-0-2026-76356)

Vulnerability from cvelistv5 – Published: 2026-08-19 21:34 – Updated: 2026-08-27 16:24
VLAI
Title
Authentication Bypass through IP Address Spoofing in the Automation Broker in Splunk SOAR
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 (https://help.splunk.com/en/splunk-soar/splunk-automation-broker/about-splunk-soar-automation-broker/about-splunk-soar-automation-broker) in the Splunk documentation.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 03:56 UTC
CWE
  • CWE-290 - This attack-focused weakness is caused by improperly implemented authentication schemes that are subject to spoofing attacks.
Assigner
cisco CNA under the mitre root
CNA scorecard C 66/100 over 443 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Splunk Splunk SOAR Affected: 8.6 , < 8.6.0 (custom)
guessed Create a notification for this product.
Date Public
2026-08-19 00:00
Credits
NgocKhanh, CyStack
Show details on NVD website
To clipboard 

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