What’s Vulnerable › Vulnerabilities
CVE-2026-20239: Sensitive Information Disclosure through Log Files in Splunk Enterprise
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-05-20 · updated 2026-07-23
- Weakness: CWE-532
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 products
- Splunk Enterprise: from 10.0.0 before 10.0.5; from 10.2.0 before 10.2.2 — fixed in 10.0.5, 10.2.2
- Splunk Cloud Platform: from 10.0.2503 before 10.0.2503.13; from 10.1.2507 before 10.1.2507.21; from 10.2.2510 before 10.2.2510.11; from 10.3.2512 before 10.3.2512.8 — fixed in 10.0.2503.13, 10.1.2507.21, 10.2.2510.11, 10.3.2512.8
How to fix
Upgrade to a fixed version: Splunk Enterprise 10.0.5, 10.2.2; Splunk Cloud Platform 10.0.2503.13, 10.1.2507.21, 10.2.2510.11, 10.3.2512.8. Check the vendor advisory for mitigations.
References
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