CVE-2026-76308 in SOAR
Summary
by MITRE • 10/22/2026
In Splunk SOAR versions below 8.7.0, an authenticated user could change the Enterprise Security edition through the Representational State Transfer (REST) API and cause Splunk SOAR to apply the license change. The vulnerability is possible because Splunk SOAR authenticates requests to manage the Enterprise Security edition but does not authorize the caller before it applies the license change. For more information see Using the REST API reference for Splunk SOAR (On-premises) (https://help.splunk.com/en/splunk-soar/soar-on-premises/rest-api-reference/8.7.0/using-the-splunk-soar-rest-api/using-the-rest-api-reference-for-splunk-soar-on-premises), Obtain and configure a Splunk SOAR (On-premises) license (https://help.splunk.com/en/splunk-soar/soar-on-premises/administer-soar-on-premises/8.7.0/configure-your-companys-settings-in-splunk-soar-on-premises/obtain-and-configure-a-splunk-soar-on-premises-license), and Integration of Splunk SOAR with Splunk Enterprise Security (https://help.splunk.com/en/splunk-enterprise-security-8/administer/8.7/automation-with-playbooks/integration-of-splunk-soar-with-splunk-enterprise-security) in the Splunk documentation.
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Analysis
by VulDB Data Team • 10/22/2026
The vulnerability identified in Splunk SOAR versions prior to 8.7.0 represents a critical failure in access control mechanisms, specifically falling under the category of Broken Access Control as defined by CWE-269. This flaw allows an authenticated user to manipulate the licensing configuration for Enterprise Security through the Representational State Transfer API without proper authorization checks. The core technical issue lies in the application's authentication logic, which verifies that a request originates from a valid session but fails to validate whether that specific user possesses the requisite privileges to modify enterprise-level settings such as license editions. This separation of identity verification and permission enforcement creates an opportunity for privilege escalation or unauthorized configuration changes within the security orchestration platform.
From an operational perspective, this vulnerability enables any authenticated account on the Splunk SOAR instance to alter the Enterprise Security edition applied by the system. Such a change can lead to significant disruptions in service availability if a user downgrades the license from a premium tier to a free or trial version, effectively disabling advanced security features and analytics capabilities that are critical for threat detection and response operations. Conversely, an attacker might attempt to simulate higher-tier licensing which could violate software compliance agreements and expose the organization to legal risks associated with unauthorized use of proprietary enterprise features. The impact extends beyond mere functional disruption, as it undermines the integrity of the security posture managed by Splunk SOAR, potentially leaving critical assets unprotected during periods when advanced threat intelligence feeds or automated playbooks are disabled due to license restrictions.
This type of vulnerability aligns closely with MITRE ATT&CK technique T1078, Valid Accounts, where adversaries leverage legitimate credentials to perform actions they should not be permitted to execute. It also reflects aspects of T1496, Resource Hijacking, if the intent is to degrade service availability by removing licensed features essential for monitoring and incident response workflows. The lack of authorization checks on sensitive administrative endpoints highlights a common architectural weakness in RESTful APIs where authentication is treated as sufficient proof of authority rather than one component of a broader access control policy that includes role-based or attribute-based permissions verification.
To mitigate this vulnerability, organizations running Splunk SOAR versions below 8.7.0 must immediately apply the vendor-provided patch to upgrade to version 8.7.0 or later, which addresses the authorization logic flaw in the REST API handling of license management endpoints. In addition to upgrading, administrators should enforce strict role-based access control policies that limit who can interact with administrative configuration APIs. Implementing network-level controls such as firewalls or web application firewalls to restrict access to sensitive internal API endpoints from untrusted networks adds an additional layer of defense. Regular auditing of user permissions and reviewing logs for unusual license modification events can also help in detecting potential exploitation attempts before they cause significant operational impact.