Status: UPDATED
| Advisory ID: CVE-2026-20239
Key Details
| CVE | CVE-2026-20239 |
| CVSS Score / Version | 7.5 (High) / CVSS v3.1 |
| Updated | 2026-07-23 |
| CVSS Vector | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CVSS Prose | attack vector is network; attack complexity is high; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high. |
| Affected products | Splunk splunk and Splunk splunk_cloud_platform |
| Classified as | CWE-532 (Insertion of Sensitive Information into Log File) |
Affected Products, Subsystems & Sectors
| Subsystems | General OT |
| Sectors | Multiple |
What to Know
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.
What to Do
Monitor Splunk's web page for any future patch releases. See vendor advisory link below.
References