low3.1
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 unaut…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| 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 |
| Splunk | Splunk Cloud Platform | from 9.3.2408 before 9.3.2408.121 from 9.3.2411 before 9.3.2411.111 from 10.0.2503 before 10.0.2503.5 |