All vulnerabilities

Servers and applications

CVE-2025-20378

In Splunk Enterprise versions below 10.0.1, 9.4.5, 9.3.7, 9.2.9, and Splunk Cloud Platform versions below 10.0.2503.5, 9.3.2411.111, and 9.3.2408.121, an unauthenticated attacker could craft a malicious URL using the `return_to` parameter of the Splunk Web login endpoint. When an authenticated user visits the malicious URL, it could cause an unvalidated redirect to an external malicious site. To…

Severity
Medium 6.1
Published
12 Nov 2025
Last changed
18 Oct 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.2.9, 9.3.7, 9.4.5
Sources
NVD

Affected software

SoftwareAffected versions
Splunk EnterpriseServers and applications · cpe:a:splunk:splunk
  • From 9.2.0 before 9.2.9
  • From 9.3.0 before 9.3.7
  • From 9.4.0 before 9.4.5
  • Version 10.0.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-20378
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-20378