CVE-2026-76406 Information Disclosure through REST API Authentication in Splunk SOAR
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-76406?
CVE-2026-76406 is a medium-severity vulnerability in Splunk SOAR, published on 21 Oct 2026.
Official description
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.
Weakness: CWE-203
Which versions are affected by CVE-2026-76406?
It affects 1 product.
Products include Splunk Soar.
How do I fix CVE-2026-76406?
No fix has been published for CVE-2026-76406 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-76406 being exploited?
There is no known exploitation of CVE-2026-76406 in the wild and no public exploit code.
Other vulnerabilities in Splunk SOAR
- CVE-2023-3997 Unauthenticated Log Injection In Splunk SOAR
- CVE-2026-76356 Authentication Bypass through IP Address Spoofing in the Automation Broker in Splunk SOAR
- CVE-2026-76357 Remote Code Execution (RCE) through Path Traversal in the REST API in Splunk SOAR
- CVE-2026-76362 Improper Certificate Validation through CyberArk Vault Privileged Access Manager in Splunk SOAR
- CVE-2026-76358 Path Traversal through App Installation Tar Extraction in Splunk SOAR
Sources
Also known as GHSA-p22x-wc3v-hrj6.