CVE-2026-20239

Sensitive Information Disclosure through Log Files in Splunk Enterprise

MEDIUM

6.5

CVSS Score

Published: May 20, 2026 at 04:32 PM UTC

Updated: July 23, 2026 at 07:31 PM UTC

2 products affected across 1 vendorSplunkSplunk Cloud Platform

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Splunk · Splunk

95%

10.0 ≤ v < 10.0.510.0.0 ≤ v < 10.0.510.2 ≤ v < 10.2.210.2.0 ≤ v < 10.2.210.0 10.2

Affected range stops below 10.0.5, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.2.2, so it looks safe — our inference, not a vendor statement

Splunk Cloud Platform · Splunk

95%

10.0.2503 ≤ v < 10.0.2503.1310.1.2507 ≤ v < 10.1.2507.2110.2.2510 ≤ v < 10.2.2510.1110.3.2512 ≤ v < 10.3.2512.810.0.2503 10.1.2507 10.2.2510 10.3.2512

Affected range stops below 10.0.2503.13, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.1.2507.21, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.2.2510.11, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.3.2512.8, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

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

References (1)

Vendor Advisory

Source: cverecord

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-532

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