CVE-2026-20255

EUVD-2026-36083
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.7 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 27%
Affected Products (NVD)
VendorProductVersion
splunksplunk
9.3.0 ≤
𝑥
< 9.3.13
splunksplunk
9.4.0 ≤
𝑥
< 9.4.12
splunksplunk
10.0.0 ≤
𝑥
< 10.0.7
splunksplunk
10.2.0 ≤
𝑥
< 10.2.4
splunksplunk_cloud_platform
9.3.2411 ≤
𝑥
< 9.3.2411.132
splunksplunk_cloud_platform
10.1.2507 ≤
𝑥
< 10.1.2507.23
splunksplunk_cloud_platform
10.2.2510 ≤
𝑥
< 10.2.2510.15
splunksplunk_cloud_platform
10.3.2512 ≤
𝑥
< 10.3.2512.13
𝑥
= Vulnerable software versions