High [CVE-2026-76306] Information Disclosure through REST API Query Filters in Splunk SOAR
This high-severity Splunk advisory covers CVE-2026-76306 affecting Splunk SOAR.
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Summary
In Splunk SOAR versions below 8.7.0, a user that has the "Observer" role could use query filters in the Representational State Transfer (REST) API to infer password hashes and authorization tokens for other users.
The information disclosure is possible because Splunk SOAR applies REST API query filters to user records before it protects sensitive fields from query processing.
For more information see Using the REST API reference for Splunk SOAR (On-premises) ( ), Query for Data ( ), and Manage roles and permissions in Splunk SOAR (On-premises) ( ) in the Splunk documentation.
- Splunk SOAR before 8.7.0
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
Mitigation
Upgrade to a fixed release: 8.7.0. 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 6 hours ago·verify at source
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