Insecure Default Access Control List through the REST API in Splunk Secure Gateway

Description

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 Spacebridge asymmetric private keys, which are secrets that compromise affected Spacebridge private-key material stored in the app collection, through the Splunk Secure Gateway App Key Value Store Representational State Transfer (REST) API. The vulnerability is possible on instances upgraded from older Splunk Secure Gateway deployments when the private-key migration remains incomplete, leaving key material in a collection with an insecure default access control list.

Scores

EPSS (exploitation in 30 days)

0.29% · top 78% of all CVEs (5 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.

Weakness

• CWE-732: The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. (opens in a new tab)All about CWE-732 and its CVEs

Affected products

• Splunk · Splunk Enterprise

  • affected 10.4 – < 10.4.2
  • affected 10.2 – < 10.2.6
  • affected 10.0 – < 10.0.9
  • affected 9.4 – < 9.4.14

• Splunk · Splunk Secure Gateway

  • affected 3.10 – < 3.10.9
  • affected 3.9 – < 3.9.23
  • affected 3.8 – < 3.8.70

What to do

Solution: Upgrade Splunk Enterprise to versions 10.4.2, 10.2.6, 10.0.9, and 9.4.14, or higher.

Workaround: Upgrade Splunk Secure Gateway to versions 3.10.9, 3.9.23, and 3.8.70, or higher. If you are not able to upgrade Splunk Enterprise or Splunk Secure Gateway, turn off or remove the Splunk Secure Gateway app. See [Manage app and add-on objects](https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.2/meet-splunk-apps/manage-app-and-add-on-objects) in the Splunk documentation. Note: Splunk Mobile, Spacebridge, and Mission Control rely on functionality in the Splunk Secure Gateway app. If you do not use any of these apps, features, or functionality, as a potential mitigation, you may turn off or remove the app.

References (1)

• https://advisory.splunk.com/advisories/SVD-2026-0801 (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-76261](https://trackcve.app/badge/CVE-2026-76261.svg)](https://trackcve.app/cve/CVE-2026-76261)

Record last updated 26 Aug 2026, 19:52 UTC.