CVE-2026-20138Sensitive Information Disclosure in "_internal" index in Splunk Enterprise
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It affects Splunk Enterprise and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
In Splunk Enterprise versions below 10.2.0, 10.0.2, 9.4.7, 9.3.9, and 9.2.11, a user of a Splunk Search Head Cluster (SHC) deployment who holds a role with access to the Splunk `_internal` index could view the `integrationKey`, `secretKey`, and `appSecretKey` secrets, generated by [Duo Two-Factor Authentication for Splunk Enterprise](https://duo.com/docs/splunk), in plain text.
- CVSS
- 6.8 MEDIUM (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-532
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- cisco
- NVD analysis
- Analyzed
- Record last updated
- Feb 26, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Splunk Splunk Enterprise splunk:enterprise (from the name) | from 10.0 before 10.0.2; from 9.4 before 9.4.7; from 9.3 before 9.3.9; from 9.2 before 9.2.11 | CNA record |
splunk splunk splunk:splunk | from 9.2.0 before 9.2.11; from 9.3.0 before 9.3.9; from 9.4.0 before 9.4.7; from 10.0.0 before 10.0.2 | NVD |
References
- https://advisory.splunk.com/advisories/SVD-2026-0203vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.