CVE-2026-20255

Published Jun 10, 2026

Last updated 4 days ago

Overview

Description
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.
Source
psirt@cisco.com
NVD status
Undergoing Analysis

Risk scores

CVSS 3.1

Type
Primary
Base score
5.7
Impact score
3.6
Exploitability score
2.1
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Severity
MEDIUM

Weaknesses

psirt@cisco.com
CWE-20

Social media

Hype score
Not currently trending

References

Sources include official advisories and independent security research.