← CVE Intelligence

CVE-2026-20139

Client-Side Denial of Service (DoS) through ''/splunkd/__raw/services/authentication/users/username'' REST API endpoint in Splunk Enterprise PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Splunk / Splunk Enterpriseaffected 10.0 before 10.0.2; affected 9.4 before 9.4.8; affected 9.3 before 9.3.9; affected 9.2 before 9.2.12
Splunk / Splunk Cloud Platformaffected 10.2.2510 before 10.2.2510.3; affected 10.1.2507 before 10.1.2507.8; affected 10.0.2503 before 10.0.2503.9; affected 9.3.2411 before 9.3.2411.121

CWE

CWE-400

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.