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Splunk Enterprise Observability Cloud App REST Handlers Omit the read_o11y_content Capability Check, Exposing the App's Access Token to Low-Privilege Users

Last refreshed2026-09-29

Status: UPDATED  |  Advisory ID: CVE-2026-76251

Key Details

CVECVE-2026-76251
CVSS Score / Version7.1 (High) / CVSS v3.1
Updated2026-08-26
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
CVSS Proseattack vector is network; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is low; availability impact is none.
Affected productsSplunk splunk
Classified asCWE-862 (Missing Authorization)

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
Splunksplunk
SubsystemsGeneral OT
SectorsMultiple

What to Know

In Splunk Enterprise versions below 10.4.2, 10.2.6, and 10.0.9, a user who does not hold the "admin" or "power" Splunk roles could cause the Splunk App for Splunk Observability Cloud to forward requests to Splunk Observability Cloud, including the Splunk Observability Cloud access token stored for the app. With this access, the user could view all relevant data available to that token and make limited changes to Splunk Observability Cloud content. The vulnerability does not affect Splunk Enterprise 9.4 and 9.3 versions. The vulnerability is possible because the app's Representational State Transfer (REST) API endpoint handlers do not enforce the read_o11y_content capability before forwarding requests with the stored access token. For more information see Define roles on the Splunk platform with capabilities (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.2/manage-splunk-platform-users-and-roles/define-roles-on-the-splunk-platform-with-capabilities) in the Splunk documentation. (NVD)

What to Do

Monitor Splunk's web page for any future patch releases. See vendor advisory link below.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-76251
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-76251
Vendor advisoryhttps://advisory.splunk.com/advisories/SVD-2026-0801