CVE-2026-20139
MEDIUM EPSS 91.4%
Published Feb 18, 20264mo ago · Modified Jun 17, 20262w ago
4.3 CVSS 3.1
Published Feb 18, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago
Description
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability Low
Threat Intelligence
EPSS Exploit Probability
91.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-400 Uncontrolled Resource Consumption Resource Mgmt
Affected Products 8
| Vendor | Product | Version | Range |
|---|---|---|---|
| splunk | splunk | * | ≥9.2.0 – <9.2.12 |
| splunk | splunk | * | ≥9.3.0 – <9.3.9 |
| splunk | splunk | * | ≥9.4.0 – <9.4.8 |
| splunk | splunk | * | ≥10.0.0 – <10.0.2 |
| splunk | splunk_cloud_platform | * | ≥9.3.2411 – <9.3.2411.121 |
| splunk | splunk_cloud_platform | * | ≥10.0.2503 – <10.0.2503.9 |
| splunk | splunk_cloud_platform | * | ≥10.1.2507 – <10.1.2507.8 |
| splunk | splunk_cloud_platform | * | ≥10.2.2510 – <10.2.2510.3 |
References 1
- advisory.splunk.com https://advisory.splunk.com/advisories/SVD-2026-0204
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.