High severity · published Aug 19, 2026
CVE-2026-76352
Improper Authorization through the REST API in Splunk Enterprise
8.8
CVSS
0.4%
EPSS
No
On KEV
Description
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 create or modify a scripted lookup through generic configuration endpoints and run an installed lookup script with the permissions of the user account running Splunk Enterprise, which could allow for access to all relevant data and affect system integrity and availability. The vulnerability is possible because the generic transforms configuration endpoints do not enforce the capabilities required to create or edit external lookup definitions. 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) and limits.conf (https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.4/configuration-file-reference/10.4.2-configuration-file-reference/limits.conf) in the Splunk documentation.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
Splunk Enterprise · Splunk
10.4 before 10.4.2; 10.2 before 10.2.6; 10.0 before 10.0.9; 9.4 before 9.4.14 · source: vendor
SP
Splunk · Splunk
9.4.0 before 9.4.14; 10.0.0 before 10.0.9; 10.2.0 before 10.2.6; 10.4.0 before 10.4.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-76352
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-76352
Vendor Advisory
https://advisory.splunk.com/advisories/SVD-2026-0801
More from Splunk Enterprise
9.8
CVE-2026-20253
Unauthenticated Arbitrary File Creation and Truncation in a PostgreSQL Sidecar Service Endpoint in Splunk Enterprise
9.9
CVE-2026-76302
Security Hardening in Splunk Enterprise - October 2026
9.9
CVE-2026-76299
Security Hardening in Splunk Enterprise - October 2026
9.8
CVE-2026-76301
Security Hardening in Splunk Enterprise - October 2026
9.8
CVE-2026-76285
Improper Adherence to Coding Standards in Splunk Enterprise
