PT-2026-48495 · Splunk · Splunk Cloud Platform+1

Tony Tong · Published 2026-06-10 · Updated 2026-06-10 · CVE-2026-20255

Mitre

CVSS v3.1

5.7

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.3.2512.13, 10.2.2510.15, 10.1.2507.23, and 9.3.2411.132, a low-privileged user that does not hold the "admin" or "power" Splunk roles could craft a malicious classic dashboard that exfiltrates sensitive data to an external server.

The vulnerability exists because URL validation on the external content dialog is incomplete, which can allow for requests to untrusted domains when a user interacts with a crafted dashboard.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2026-20255

Affected Products

Splunk Cloud Platform

Splunk Enterprise

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-20255 · Security Note
• https://advisory.splunk.com/advisories/SVD-2026-0605 · Note