CVE-2026-76366 Information Disclosure through the REST API in Splunk SOAR
Authenticated users can exploit REST API filtering to recover session tokens, leading to unauthorized access to all data available to the affected user.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76366?
CVE-2026-76366 is a medium-severity vulnerability in Splunk SOAR, published on 19 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In Splunk SOAR versions below 8.6.0, a user with a valid Splunk SOAR account could use Representational State Transfer (REST) API filtering on playbook runs to recover session tokens that compromise all data available to the affected user. The information disclosure is possible because Splunk SOAR does not block REST API filters from matching values that responses otherwise hide. For more information see REST Run Playbook (https://help.splunk.com/en/splunk-soar/soar-cloud/rest-api-reference/run-playbook-endpoints/rest-run-playbook) in the Splunk documentation.
Weakness: CWE-200
Which versions are affected by CVE-2026-76366?
It affects 1 product.
Products include Splunk Soar.
How do I fix CVE-2026-76366?
No fix has been published for CVE-2026-76366 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-76366 being exploited?
There is no known exploitation of CVE-2026-76366 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-24cw-c957-pr32.