Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-20239

Severity CVSS v4.0:
Pending analysis
Type:
CWE-532 Information Exposure Through Log Files
Publication date:
20/05/2026
Last modified:
21/05/2026

Description

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* 10.0.0 (including) 10.0.5 (excluding)
cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* 10.2.0 (including) 10.2.2 (excluding)
cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:* 10.0.2503 (including) 10.0.2503.13 (excluding)
cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:* 10.1.2507 (including) 10.1.2507.21 (excluding)
cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:* 10.2.2510 (including) 10.2.2510.11 (excluding)
cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:* 10.3.2512 (including) 10.3.2512.8 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools