CVE-2026-20255
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.
Published:Jun 10, 2026
Last Modified:Jun 15, 2026
EPS:Jun 10, 2026
EPSS Score:0.00239
CVSS Score:5.7
Affected Products
Vendor
Product
Action
Vendor
Splunk
Product
Splunk
Splunk
Splunk
Vendor
Splunk
Product
Splunk Cloud Platform
Splunk
Splunk Cloud Platform
Vendor
Splunk
Product
Splunk Enterprise
Splunk
Splunk Enterprise
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
