CVE-2026-76406 (GCVE-0-2026-76406)

Vulnerability from cvelistv5 – Published: 2026-10-21 22:52 – Updated: 2026-10-21 22:52
VLAI
Title
Information Disclosure through REST API Authentication in Splunk SOAR
Summary
In Splunk SOAR versions below 8.7.0, an unauthenticated user with access to encrypted credential data from an affected Splunk SOAR instance could submit Basic authentication data to the Representational State Transfer (REST) API to expose and decrypt that encrypted credential data. The vulnerability is possible because Splunk SOAR decrypts encrypted Basic authentication values before completing authentication checks. The attack requires the unauthenticated user to have encrypted credential data from an affected Splunk SOAR instance. The unauthenticated user should not be able to exploit the vulnerability at will. 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/8.5.0/using-the-splunk-soar-rest-api/using-the-rest-api-reference-for-splunk-soar-on-premises) in the Splunk documentation.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-203 - The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
Assigner
cisco CNA under the mitre root
CNA scorecard C 66/100 over 442 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Splunk Splunk SOAR Affected: 0 , < 8.7.0 (custom)
guessed Create a notification for this product.
Date Public
2026-10-21 00:00
Credits
Eric Li, Splunk
Show details on NVD website
To clipboard 

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  }
}



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