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CVE-2026-76272— Missing Access Control through the REST API in Splunk Secure Gateway

Quick assessment

Affected
Splunk Splunk Enterprise
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Splunk Enterprise 10.4.3 之前、10.2.7 之前、10.0.10 之前以及 9.4.15 之前的版本中，不具备 “admin” 或 “power” Splunk 角色的用户可能导致 Splunk Secure Gateway 对攻击者控制的载荷进行签名。此漏洞的发生是因为 Splunk Secure Gateway 未验证请求签名的用户是否具备相应权限。此外，Splunk Secure Gateway 在 3.10.11 之前、3.9.25 之前以及 3.8.72 之前的版本也受到影响

CVSS 4.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-76272

Vulnerability Information
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Vulnerability Title
Missing Access Control through the REST API in Splunk Secure Gateway
Source: CVE Program / CVE List V5
Vulnerability Description
In Splunk Enterprise versions below 10.4.3, 10.2.7, 10.0.10, and 9.4.15, a user who does not hold the "admin" or "power" Splunk roles could cause Splunk Secure Gateway to sign attacker-controlled payloads. The vulnerability is possible because Splunk Secure Gateway does not verify that the user is authorized to request a signature. Splunk Secure Gateway versions below 3.10.11, 3.9.25, and 3.8.72 are also affected. 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Splunk Splunk Enterprise 10.4 ~ 10.4.3 -
Splunk Splunk Secure Gateway 3.10 ~ 3.10.11 -

II. Public POCs for CVE-2026-76272

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III. Intelligence Information for CVE-2026-76272

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Other References for CVE-2026-76272 (1)

Same Patch Batch · Splunk · 2026-10-07 · 23 CVEs total

CVE-2026-76268 9.8 CRITICAL Missing Authentication for Critical Function in the Patroni REST API in Splunk Enterprise
CVE-2026-76266 7.7 HIGH Local Privilege Escalation through Linux Package Upgrades in Splunk Enterprise
CVE-2026-76265 6.5 MEDIUM Improper Access Control through REST API Endpoints in Splunk Secure Gateway
CVE-2026-76274 6.5 MEDIUM Server-Side Request Forgery (SSRF) through the REST API in Splunk App for Splunk Observabi
CVE-2026-76269 6.5 MEDIUM Improper Access Control in Search Job Retrieval through the REST API in Splunk Enterprise
CVE-2026-76270 6.5 MEDIUM Structured Query Language (SQL) Injection in the SPL2 Module Catalog in Splunk Enterprise
CVE-2026-76271 6.5 MEDIUM Denial of Service (DoS) in the Discover Splunk Observability Cloud app for Splunk Enterpri
CVE-2026-76280 6.3 MEDIUM Incorrect Permission Assignment for App Key Value Store Collections in Splunk Secure Gatew
CVE-2026-76286 5.3 MEDIUM Server-Side Request Forgery (SSRF) through Custom API Tools in Splunk MCP Server
CVE-2026-76278 4.3 MEDIUM Authorization Bypass in SPL2 Module Permissions in Splunk Enterprise
CVE-2026-76267 4.3 MEDIUM Log Injection through the REST API in Splunk App for Splunk O11y Cloud
CVE-2026-76264 4.3 MEDIUM Improper Authorization through the REST API in Splunk Enterprise
CVE-2026-76276 4.3 MEDIUM Information Disclosure in the Discover Splunk Observability Cloud app through Splunk Web f
CVE-2026-76275 4.3 MEDIUM Improper Authorization in Search Job Listings through the REST API in Splunk Enterprise
CVE-2026-76273 4.3 MEDIUM Improper Input Validation through the collect Command in Splunk Enterprise
CVE-2026-76279 4.3 MEDIUM Improper Input Validation of Index Names through the collect Command in Splunk Enterprise
CVE-2026-76277 4.1 MEDIUM Improper Input Validation of Native Splunk Usernames through the REST API in Splunk Enterp
CVE-2026-76281 Improper Access Control in Splunk Enterprise
CVE-2026-76284 Improper Neutralization in Splunk Enterprise
CVE-2026-76285 Improper Adherence to Coding Standards in Splunk Enterprise

Showing top 20 of 23 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Splunk Enterprise
Same vendor: Splunk
Same weakness: CWE-862

V. Comments for CVE-2026-76272

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