Authentication Bypass by Spoofing in Splunk Security Orchestration, Automation and Response (SOAR) - CVE-2026-76356
Published: August 20, 2026
Vulnerability identifier: #VU144487
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-76356
CWE-ID: CWE-290
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to authentication bypass through IP address spoofing in the Automation Broker notification endpoint when handling a crafted request with a spoofed client-supplied source IP address header. A remote attacker can send a crafted request to execute arbitrary code.
Affected software
Splunk Security Orchestration, Automation and Response (SOAR)
How to mitigate CVE-2026-76356
Install security update from vendor's website.
Splunk Security Orchestration, Automation and Response (SOAR) - update to 8.6.0