CVE-2026-20139 (GCVE-0-2026-20139)
Vulnerability from cvelistv5
Published
2026-02-18 16:45
Modified
2026-02-19 19:28
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-400 - The software does not properly control the allocation and maintenance of a limited resource thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
Summary
In Splunk Enterprise versions below 10.2.0, 10.0.2, 9.4.8, 9.3.9, and 9.2.12, and Splunk Cloud Platform versions below 10.2.2510.3, 10.1.2507.8, 10.0.2503.9, and 9.3.2411.121, a low-privileged user that does not hold the "admin" or "power" Splunk roles could craft a malicious payload into the `realname`, `tz`, or `email` parameters of the `/splunkd/__raw/services/authentication/users/username` REST API endpoint when they change a password. This could potentially lead to a client‑side denial‑of‑service (DoS). The malicious payload might significantly slow page load times or render Splunk Web temporarily unresponsive.
References
Impacted products
Vendor Product Version
Splunk Splunk Enterprise Version: 10.0   < 10.0.2
Version: 9.4   < 9.4.8
Version: 9.3   < 9.3.9
Version: 9.2   < 9.2.12
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   Splunk Splunk Cloud Platform Version: 10.2.2510   < 10.2.2510.3
Version: 10.1.2507   < 10.1.2507.8
Version: 10.0.2503   < 10.0.2503.9
Version: 9.3.2411   < 9.3.2411.121
 Create a notification for this product.
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