In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, and Splunk Secure Gateway versions below 3.10.10, 3.9.24, and 3.8.71, a user who does not hold the "admin" or "power" Splunk roles could register an arbitrary companion app and cause Splunk Secure Gateway to forward mobile user requests, including tokens that compromise all relevant data available to the affected mobile user, to an attacker-controlled Uniform Resource Locator (URL). The vulnerability is possible because a hard-coded cryptographic key in the Splunk Secure Gateway companion app registration handler allows for arbitrary callback URL registration without restriction. For more information see Define roles on the Splunk platform with capabilities (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.2/manage-splunk-platform-users-and-roles/define-roles-on-the-splunk-platform-with-capabilities) in the Splunk documentation.
References
| Link | Resource |
|---|---|
| https://advisory.splunk.com/advisories/SVD-2026-0801 | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
Configuration 2 (hide)
|
History
No history.
Information
Published : 2026-08-19 22:17
Updated : 2026-08-26 16:16
NVD link : CVE-2026-76258
Mitre link : CVE-2026-76258
CVE.ORG link : CVE-2026-76258
JSON object : View
Products Affected
splunk
- splunk
- splunk_secure_gateway
CWE
CWE-321
Use of Hard-coded Cryptographic Key