CVE-2026-76256 json
Information Exposure through REST API Endpoints in Splunk Secure Gateway
published 2026-08-19 2 mo ago modified 2026-10-26 13 d ago also EUVD-2026-63108
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 23%
- public exploits
- 0
- none known
Summary
In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, and Splunk Secure Gateway versions below 3.10.9, 3.9.23, and 3.8.70, a user who does not hold the "admin" or "power" Splunk roles could read sensitive Security Assertion Markup Language setup and instance settings information through Splunk Secure Gateway Representational State Transfer (REST) API endpoints. The vulnerability is possible because the affected Security Assertion Markup Language setup and instance settings REST API endpoints do not enforce authorization requirements before returning configuration information.
Patch / fix
- Splunk Splunk Enterprise 9.4.14, 10.0.9, 10.2.6, 10.4.2
- Splunk Splunk Secure Gateway 3.8.70, 3.9.23, 3.10.9
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected products
- Splunk Splunk Enterprise
- Splunk Splunk Secure Gateway
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
-
advisory.splunk.com
/advisories/SVD-2026-0801
vendor-advisory
Sources
- CVE List CVE-2026-76256
- NVD CVE-2026-76256
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