Medium severity · published Aug 19, 2026
CVE-2026-76261
Insecure Default Access Control List through the REST API in Splunk Secure Gateway
6.5
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% 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
SS
Splunk Secure Gateway · Splunk
3.10 before 3.10.9; 3.9 before 3.9.23; 3.8 before 3.8.70 · source: vendor, NVD
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-2026-76261
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-76261
Mitigation
https://advisory.splunk.com/advisories/SVD-2026-0801
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