CVE-2026-20139Disclosure(splunk / splunk)

LOWCVSS 4.3 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

splunk CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://advisory.splunk.com/advisories/SVD-2026-0204

Weakness type (CWE)

CWE-400

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

splunk
splunk_cloud_platform

Threat summary

2 mentions across 1 observed day

What's happening

Disclosure: 1 classified signal
General: 1 classified signal
2 total mentions across 1 day

Affected systems

Vendors

splunk

Products

splunksplunk_cloud_platform

Deep dive

Activity timeline2 mentions / 1d

Signal classification2 categories

Disclosure

150.0%

General

150.0%

Referenced assets2 URLs

By indicator

Full discourse2 posts

Infoflowcloud@infoflowcloud226d
Disclosure
🚨*CVE* CVE-2026-20139 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.… https://www.cve.org/CVERecord?id=CVE-2026-20139 ----- Traducción: CVE-2026-20139 En … http://infoflow.cloud`
Post summary
The tweet announces CVE-2026-20139, lists affected Splunk versions, and links to the CVE record, but provides no further technical or mitigation details.
0000043
53 followersView on X
CVE@CVEnew226d
General
CVE-2026-20139 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.… https://www.cve.org/CVERecord?id=CVE-2026-20139
Post summary
The snippet lists affected Splunk versions for CVE-2026-20139 and links to the CVE record, but provides no further technical, exploit, or mitigation details.
00000349
56.5K followersView on X

CPE platform detail2 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

2 of 2 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	splunk	splunk	-	-	-
App	splunk	splunk_cloud_platform	-	-	-

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