What’s Vulnerable › Vulnerabilities
CVE-2025-20382: URL validation bypass through Views Dashboard in Splunk Enterprise
- Severity: medium (CVSS 5.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-12-03 · updated 2026-06-17
- Weakness: CWE-601
Description
In Splunk Enterprise versions below 10.0.2, 9.4.6, 9.3.8, and 9.2.10, and Splunk Cloud Platform versions below 10.1.2507.10, 10.0.2503.8, and 9.3.2411.120, a low-privileged user that does not hold the "admin" or "power" Splunk roles could create a views dashboard with a custom background using the `data:image/png;base64` protocol that could potentially lead to an unvalidated redirect. This behavior circumvents the Splunk external URL warning mechanism by using a specially crafted URL, allowing for a redirection to an external malicious site. The vulnerability requires the attacker to phish the victim by tricking them into initiating a request within their browser. The authenticated user should not be able to exploit the vulnerability at will.
Affected products
- Splunk Enterprise: from 9.2.0 before 9.2.10; from 9.3.0 before 9.3.8; from 9.4.0 before 9.4.6; from 10.0.0 before 10.0.2 — fixed in 10.0.2, 9.2.10, 9.3.8, 9.4.6
- Splunk Cloud Platform: from 9.3.2411 before 9.3.2411.120; from 10.0.2503 before 10.0.2503.8; from 10.1.2507 before 10.1.2507.10 — fixed in 10.0.2503.8, 10.1.2507.10, 9.3.2411.120
How to fix
Upgrade to a fixed version: Splunk Enterprise 10.0.2, 9.2.10, 9.3.8, 9.4.6; Splunk Cloud Platform 10.0.2503.8, 10.1.2507.10, 9.3.2411.120. Check the vendor advisory for mitigations.
References
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