CVE-2026-20258

EUVD-2026-36089
In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.3.2512.11, 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 store a malicious script in a classic dashboard HTML panel, causing unauthorized JavaScript code to execute in the browser of another user.  

The vulnerability requires the attacker to phish the victim by tricking them into initiating a request within their browser. The low-privileged user should not be able to exploit the vulnerability at will.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
ciscoCNA
7.1 HIGH
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
splunksplunk
10.2 ≤
𝑥
< 10.2.4
CNA
splunksplunk
10.0 ≤
𝑥
< 10.0.7
CNA
splunksplunk
9.4 ≤
𝑥
< 9.4.12
CNA
splunksplunk
9.3 ≤
𝑥
< 9.3.13
CNA
splunksplunk
10.3.2512 ≤
𝑥
< 10.3.2512.11
CNA
splunksplunk
10.2.2510 ≤
𝑥
< 10.2.2510.15
CNA
splunksplunk
10.1.2507 ≤
𝑥
< 10.1.2507.23
CNA
splunksplunk
9.3.2411 ≤
𝑥
< 9.3.2411.132
CNA