CVE-2026-20239 | BDVDB-2026-334176 Detail

SplunkSplunk Enterprise

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#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-532 Insertion of Sensitive Information into Log File

References#

https://advisory.splunk.com/advisories/SVD-2026-0503

Exploit#

No public exploit known

History#

Version 12026-05-20Record published in the CVE List.
Version 22026-05-21Most recent update recorded in the CVE List.

Published

Published: 2026-05-20
Last modified: 2026-05-21

Vendor information

Vendor: Splunk
Product: Splunk Enterprise

All Splunk vulnerabilities

Score

7.5 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 42.1.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Information Disclosure

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 10.2 and < 10.2.2
Fixed
10.2.2
Vulnerable
>= 10.0 and < 10.0.5
Fixed
10.0.5

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.5 High

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Privileges Required	Low
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).