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How the CVE Works
CVE-2025-20227 affects Splunk Enterprise and Splunk Cloud Platform, where Dashboard Studio dashboards fail to enforce proper role-based access controls (RBAC) for external content warnings. A low-privileged user without “admin” or “power” roles can bypass the modal dialog intended to warn about loading external resources. This occurs due to insufficient validation in the dashboard rendering logic, allowing unauthorized data exfiltration or unintended content loading. The vulnerability stems from improper session validation when processing embedded external URLs, enabling attackers to manipulate dashboard components and retrieve sensitive information.
DailyCVE Form
Platform: Splunk Enterprise / Cloud
Version: <9.4.1, <9.3.3, <9.2.5, <9.1.8
Vulnerability: External Content Bypass
Severity: Low
Date: 07/21/2025
Prediction: Patch by 08/15/2025
What Undercode Say
curl -X GET "http://vulnerable-splunk/dashboard" --header "X-Bypass-Warning: true"
import requests
response = requests.get("http://splunk-server/dashboard", headers={"X-Forwarded-For": "127.0.0.1"})
How Exploit
- Craft a malicious dashboard with embedded external URLs.
- Use low-privilege sessions to trigger content loading.
- Intercept and modify HTTP requests to bypass dialog checks.
Protection from this CVE
- Upgrade to Splunk 9.4.1 or later.
- Restrict dashboard editing permissions.
- Implement network-level URL filtering.
Impact
- Unauthorized data disclosure.
- Potential phishing vector.
- Limited to low-privilege users.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
