CVE-2025-20378 (GCVE-0-2025-20378)

Vulnerability from cvelistv5 – Published: 2025-11-12 17:22 – Updated: 2025-11-12 21:04
VLAI?
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.
Severity ?
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
CWE
  • 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.
Assigner
References
Impacted products
Vendor Product Version
Splunk Splunk Enterprise Affected: 10.0 , < 10.0.1 (custom)
Affected: 9.4 , < 9.4.5 (custom)
Affected: 9.3 , < 9.3.7 (custom)
Affected: 9.2 , < 9.2.9 (custom)
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    Splunk Splunk Cloud Platform Affected: 10.0.2503 , < 10.0.2503.5 (custom)
Affected: 9.3.2411 , < 9.3.2411.111 (custom)
Affected: 9.3.2408 , < 9.3.2408.121 (custom)
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Credits
Diogo Real (c0rte)
Show details on NVD website
To clipboard 

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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.