Cross-site request forgery in Splunk Enterprise - CVE-2026-20296
Published: July 21, 2026
Vulnerability identifier: #VU138946
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-20296
CWE-ID: CWE-352
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Splunk Inc.
Affected software:
Splunk Enterprise
Splunk Enterprise
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information and execute arbitrary SPL searches on behalf of a victim user.
The vulnerability exists due to improper neutralization of special elements in Splunk Web Deployment Server endpoints when handling cross-site request forgery GET requests. A remote attacker can trick the victim into initiating a crafted browser request to disclose sensitive information and execute arbitrary SPL searches on behalf of a victim user.
User interaction is required, and the victim must hold a role with the list_deployment_server capability.
How to mitigate CVE-2026-20296
Install security update from vendor's website.