CVE-2025-20378
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Splunk | Splunk Enterprise | 10.0 < 10.0.1 | affected |
| Splunk | Splunk Enterprise | 9.4 < 9.4.5 | affected |
| Splunk | Splunk Enterprise | 9.3 < 9.3.7 | affected |
| Splunk | Splunk Enterprise | 9.2 < 9.2.9 | affected |
| Splunk | Splunk Cloud Platform | 10.0.2503 < 10.0.2503.5 | affected |
| Splunk | Splunk Cloud Platform | 9.3.2411 < 9.3.2411.111 | affected |
| Splunk | Splunk Cloud Platform | 9.3.2408 < 9.3.2408.121 | affected |
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.
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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