CVE-2026-76313CWE-284broken-access-control

CVE-2026-76313

High · published August 20, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
49.8
In the wild
Unconfirmed
What it is

In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, a user who does not hold the "admin" or "power" Splunk roles could perform Remote Code Execution (RCE) by uploading a malicious knowledge bundle and causing it to be used by distributed search, which can allow for access to all relevant data and affect system integrity and availability. The vulnerability is possible because the Representational State Transfer (REST) API endpoint for knowledge bundle upload does not require the high-privilege capability edit_dist_peer, and distributed search accepts caller-supplied knowledge bundle selections from users who do not hold that capability. For more information see What search heads send to search peers (https://help.splunk.com/en/splunk-enterprise/administer/distributed-search/9.2/knowledge-bundle-replication/what-search-heads-send-to-search-peers), About configuring role-based user access (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/9.0/manage-splunk-platform-users-and-roles/about-configuring-role-based-user-access), Define roles on the Splunk platform with capabilities (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/9.1/manage-splunk-platform-users-and-roles/define-roles-on-the-splunk-platform-with-capabilities), and Using the REST API reference (https://help.splunk.com/en/splunk-enterprise/rest-api-reference/10.4/introduction/using-the-rest-api-reference) in the Splunk documentation.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00636 · 49.8th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-08-20T02:17Z
Affected products (4)
ProductVersionsFixed in
splunk/splunk≥ 9.4.0, < 9.4.149.4.14
splunk/splunk≥ 10.0.0, < 10.0.910.0.9
splunk/splunk≥ 10.2.0, < 10.2.610.2.6
splunk/splunk≥ 10.4.0, < 10.4.210.4.2
References (1)
EPSS history
Timeline
  • 19 AUG 21:34Z
    Remote Code Execution (RCE) through the REST API in Splunk Enterprise
    cvelistv5