CVE-2026-20239

EUVD-2026-31139
In Splunk Enterprise versions below 10.2.2 and 10.0.5, and Splunk Cloud Platform versions below 10.3.2512.8, 10.2.2510.11, 10.1.2507.21, and 10.0.2503.13, a user with a role that has access to the `_internal` index could view session cookies and response bodies that contain sensitive data.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 38%
Affected Products (NVD)
VendorProductVersion
splunksplunk
10.0.0 ≤
𝑥
< 10.0.5
splunksplunk
10.2.0 ≤
𝑥
< 10.2.2
splunksplunk_cloud_platform
10.0.2503 ≤
𝑥
< 10.0.2503.13
splunksplunk_cloud_platform
10.1.2507 ≤
𝑥
< 10.1.2507.21
splunksplunk_cloud_platform
10.2.2510 ≤
𝑥
< 10.2.2510.11
splunksplunk_cloud_platform
10.3.2512 ≤
𝑥
< 10.3.2512.8
𝑥
= Vulnerable software versions
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://advisory.splunk.com/advisories/SVD-2026-0503