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CVE-2026-20255

Improper Input Validation through Classic Dashboards in Splunk Enterprise

Published: Jun 10, 2026Updated: Jun 15, 2026 Sources: CVE List NVDCWE-20
5.7MEDIUM
NVD MITRE
EPSS Score
0.4%
Top 72.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:RS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-20

Affected Products

Splunk
commercial·USaka splunk enterprise, splunk cloud platform
Splunk Enterprise
Security Products
Splunk Cloud Platform
Security Products
splunk
Security Products
and 1 more affected products View all →

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
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References

https://advisory.splunk.com/advisories/SVD-2026-0605
advisory.splunk.com

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