SEPTEMBER 18, 2026
Live Feed
Back to database
Case File

CVE-2026-76258

MEDIUM · CVSS 6.5 EPSS 0.25%

Source: NVD + CISA KEV + EPSS · Published 2026-08-19 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

Splunk Enterprise and Splunk Secure Gateway versions prior to specified updates are vulnerable to unauthorized registration of arbitrary companion apps by users lacking "admin" or "power" roles. This flaw allows attackers to intercept mobile user requests, potentially compromising sensitive data through malicious URLs. Organizations using affected versions should prioritize patching to mitigate the risk of data exposure.

CVE
CVE-2026-76258
Severity
MEDIUM
CVSS
6.5
EPSS
0.25%

Original NVD Description

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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)