CVE-2025-20382

URL validation bypass through Views Dashboard in Splunk Enterprise

State
Published
Severity
3.5 Low
Published
Dec 3, 2025
Updated
Dec 3, 2025
Reserved
Oct 10, 2024

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.13.5 LowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:Ncisco

Weaknesses

  • CWE-601 A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks.

Affected Products

ProductVersions
Splunk EnterpriseSplunk
  • 10.0 to before 10.0.2Affected
  • 9.4 to before 9.4.6Affected
  • 9.3 to before 9.3.8Affected
  • 9.2 to before 9.2.10Affected
Splunk Cloud PlatformSplunk
  • 10.1.2507 to before 10.1.2507.10Affected
  • 10.0.2503 to before 10.0.2503.8Affected
  • 9.3.2411 to before 9.3.2411.120Affected

References

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