CVE-2025-20378
Unknown
Unknown - Not Provided
BaseFortify
Publication date: 2025-11-12
Last updated on: 2025-12-03
Assigner: Cisco Systems, Inc.
Description
Description
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 be successful, the attacker has to trick the victim into initiating a request from their browser. The unauthenticated attacker should not be able to exploit the vulnerability at will.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| splunk | splunk | From 9.2.0 (inc) to 9.2.9 (exc) |
| splunk | splunk | From 9.3.0 (inc) to 9.3.7 (exc) |
| splunk | splunk | From 9.4.0 (inc) to 9.4.5 (exc) |
| splunk | splunk | 10.0.0 |
| splunk | splunk_cloud_platform | From 9.3.2408 (inc) to 9.3.2408.121 (exc) |
| splunk | splunk_cloud_platform | From 9.3.2411 (inc) to 9.3.2411.111 (exc) |
| splunk | splunk_cloud_platform | From 10.0.2503 (inc) to 10.0.2503.5 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-601 | The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect. |
