Splunk Enterprise/Splunk Secure Gateway up to 10.4.2 App Key Value Store improper authorization

Summaryinfo

A vulnerability classified as critical was found in Splunk Enterprise and Splunk Secure Gateway up to 10.4.2. This affects an unknown function of the component App Key Value Store. The manipulation results in improper authorization. This vulnerability is known as CVE-2026-76280. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in Splunk Enterprise and Splunk Secure Gateway up to 10.4.2. Affected is an unknown function of the component App Key Value Store. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In Splunk Enterprise versions below 10.4.3, 10.2.7, 10.0.10, and 9.4.15, and Splunk Secure Gateway versions below 3.10.11, 3.9.25, and 3.8.72, an authenticated user who does not hold the "admin" or "sc_admin" Splunk roles could modify Splunk Secure Gateway alert and mobile-device recipient data in App Key Value Store (KV Store) collections that later alert and subscription workflows use. The vulnerability is possible because the affected collections allow unrestricted write access instead of limiting writes to authorized Splunk Secure Gateway workflows. For more information see About the app key value store (https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.4/administer-the-app-key-value-store/about-the-app-key-value-store), KV store endpoint descriptions (https://help.splunk.com/en/splunk-enterprise/leverage-rest-apis/rest-api-reference/10.4/kv-store-endpoints/kv-store-endpoint-descriptions), and About configuring role-based user access (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.4/manage-splunk-platform-users-and-roles/about-configuring-role-based-user-access) in the Splunk documentation.

The advisory is available at advisory.splunk.com. This vulnerability is traded as CVE-2026-76280 since 08/19/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1548.002 by the MITRE ATT&CK project.

Upgrading to version 10.4.3, 10.2.7, 10.0.10, 9.4.15, 3.10.11, 3.9.25 or 3.8.72 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Log Management Software

Vendor

• Splunk

Name

• Enterprise
• Splunk Secure Gateway

Version

• 3.8.0
• 3.8.1
• 3.8.2
• 3.8.3
• 3.8.4
• 3.8.5
• 3.8.6
• 3.8.7
• 3.8.8
• 3.8.9
• 3.8.10
• 3.8.11
• 3.8.12
• 3.8.13
• 3.8.14
• 3.8.15
• 3.8.16
• 3.8.17
• 3.8.18
• 3.8.19
• 3.8.20
• 3.8.21
• 3.8.22
• 3.8.23
• 3.8.24
• 3.8.25
• 3.8.26
• 3.8.27
• 3.8.28
• 3.8.29
• 3.8.30
• 3.8.31
• 3.8.32
• 3.8.33
• 3.8.34
• 3.8.35
• 3.8.36
• 3.8.37
• 3.8.38
• 3.8.39
• 3.8.40
• 3.8.41
• 3.8.42
• 3.8.43
• 3.8.44
• 3.8.45
• 3.8.46
• 3.8.47
• 3.8.48
• 3.8.49
• 3.8.50
• 3.8.51
• 3.8.52
• 3.8.53
• 3.8.54
• 3.8.55
• 3.8.56
• 3.8.57
• 3.8.58
• 3.8.59
• 3.8.60
• 3.8.61
• 3.8.62
• 3.8.63
• 3.8.64
• 3.8.65
• 3.8.66
• 3.8.67
• 3.8.68
• 3.8.69
• 3.8.70
• 3.8.71
• 3.9.0
• 3.9.1
• 3.9.2
• 3.9.3
• 3.9.4
• 3.9.5
• 3.9.6
• 3.9.7
• 3.9.8
• 3.9.9
• 3.9.10
• 3.9.11
• 3.9.12
• 3.9.13
• 3.9.14
• 3.9.15
• 3.9.16
• 3.9.17
• 3.9.18
• 3.9.19
• 3.9.20
• 3.9.21
• 3.9.22
• 3.9.23
• 3.9.24
• 3.10.0
• 3.10.1
• 3.10.2
• 3.10.3
• 3.10.4
• 3.10.5
• 3.10.6
• 3.10.7
• 3.10.8
• 3.10.9
• 3.10.10
• 9.4.0
• 9.4.1
• 9.4.2
• 9.4.3
• 9.4.4
• 9.4.5
• 9.4.6
• 9.4.7
• 9.4.8
• 9.4.9
• 9.4.10
• 9.4.11
• 9.4.12
• 9.4.13
• 9.4.14
• 10.0.0
• 10.0.1
• 10.0.2
• 10.0.3
• 10.0.4
• 10.0.5
• 10.0.6
• 10.0.7
• 10.0.8
• 10.0.9
• 10.2.0
• 10.2.1
• 10.2.2
• 10.2.3
• 10.2.4
• 10.2.5
• 10.2.6
• 10.4.0
• 10.4.1
• 10.4.2

License

• commercial

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

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Timelineinfo

Sourcesinfo

Entryinfo

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