Server-Side Request Forgery (SSRF) in Splunk Enterprise - CVE-2026-20252
Published: June 12, 2026
Vulnerability identifier: #VU134462
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-20252
CWE-ID: CWE-918
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 user to send server-side requests to arbitrary internal destinations.
The vulnerability exists due to improper control of server-side request targets in the Dashboard Studio PDF export feature when processing PDF export requests. A remote user can supply a crafted destination or redirect chain to send server-side requests to arbitrary internal destinations.
The issue is caused by trusted-domain validation that uses a prefix match and by automatic following of HTTP redirects without re-validating each redirect target against the allowlist.
How to mitigate CVE-2026-20252
Install security update from vendor's website.