CVE-2026-76406: medium-severity vulnerability in Splunk SOAR
Information Disclosure through REST API Authentication in Splunk SOAR
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.9epss 0.3%
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
Splunk · Splunk SOARRelated CVEs — Splunk SOAR
In the same product, most dangerous first.
CVE-2026-76356HIGHAuthentication Bypass through IP Address Spoofing in the Automation Broker in Splunk SOAREPSS 0.6%CVE-2026-76359MEDIUMPath Traversal through Universal Forwarder Installer Archive Extraction in Splunk SOAREPSS 0.5%CVE-2026-76358MEDIUMPath Traversal through App Installation Tar Extraction in Splunk SOAREPSS 0.5%CVE-2026-76357HIGHRemote Code Execution (RCE) through Path Traversal in the REST API in Splunk SOAREPSS 0.4%CVE-2026-76527CRITICALImproper Check or Handling of Exceptional Conditions in Splunk SOAREPSS 0.4%CVE-2026-76363MEDIUMStructured Query Language Injection through the REST API in Splunk SOAREPSS 0.4%