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TI-2026-53406 Aliases CVE-2026-76351GHSA-9pvq-j27w-mjfc

Server-Side Request Forgery (SSRF) through the Report Notification REST API in Splunk Secure Gateway

Priority MEDIUM 40CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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 use crafted report notification data to cause Splunk Secure Gateway to send a request to the Splunk Enterprise Representational State Transfer (REST) API using a system-level session token and modify the Splunk platform configuration. The user could then obtain a session token without a password and use it to access all relevant data and affect system integrity. The vulnerability is possible because Splunk Secure Gateway does not validate decoded report notification identifiers before using them to construct requests to the Splunk Enterprise REST API.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00417 36th percentileScored 2026-11-07
Fix Fixed Splunk Enterprise (Splunk): 10.4.2, 10.2.6, 10.0.9 +1Splunk Secure Gateway (Splunk): 3.10.9, 3.9.23, 3.8.70

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SplunkSplunk Enterprise10.4 to before 10.4.2; 10.2 to before 10.2.6; 10.0 to before 10.0.9; 9.4 to before 9.4.1410.4.2, 10.2.6, 10.0.9, 9.4.14Patch availableCNA
SplunkSplunk Secure Gateway3.10 to before 3.10.9; 3.9 to before 3.9.23; 3.8 to before 3.8.703.10.9, 3.9.23, 3.8.70Patch availableCNA
  • Splunk Enterprise VendorSplunk Affected 10.4 to before 10.4.2; 10.2 to before 10.2.6; 10.0 to before 10.0.9; 9.4 to before 9.4.14 Fixed in 10.4.2, 10.2.6, 10.0.9, 9.4.14 Patch available CNA
  • Splunk Secure Gateway VendorSplunk Affected 3.10 to before 3.10.9; 3.9 to before 3.9.23; 3.8 to before 3.8.70 Fixed in 3.10.9, 3.9.23, 3.8.70 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*9.4.0 to before 9.4.14; 10.0.0 to before 10.0.9; 10.2.0 to before 10.2.6; 10.4.0 to before 10.4.2VulnerableSplunk
cpe:2.3:a:splunk:splunk_secure_gateway:*:*:*:*:*:*:*:*3.8.0 to before 3.8.70; 3.9.0 to before 3.9.23; 3.10.0 to before 3.10.9VulnerableSplunk
  • cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* Versions 9.4.0 to before 9.4.14; 10.0.0 to before 10.0.9; 10.2.0 to before 10.2.6; 10.4.0 to before 10.4.2 Vulnerable ·Splunk
  • cpe:2.3:a:splunk:splunk_secure_gateway:*:*:*:*:*:*:*:* Versions 3.8.0 to before 3.8.70; 3.9.0 to before 3.9.23; 3.10.0 to before 3.10.9 Vulnerable ·Splunk

Remediation

  • Fix · CNA Splunk Enterprise (Splunk) Fixed in 10.4.2, 10.2.6, 10.0.9, 9.4.14
  • Fix · CNA Splunk Secure Gateway (Splunk) Fixed in 3.10.9, 3.9.23, 3.8.70

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Splunk Enterprise 10.0.9, 10.2.6 and 2 more versions

    45 records Highest priority Priority MEDIUM 13 MEDIUM, 32 LOW

    Other records, highest priority first

    • TI-2026-53366 Improper Access Control in Embedded Report Dispatch Archives in Splunk EnterprisePriority MEDIUM 49
    • TI-2026-53365 Improper Access Control through Embedded Report REST API Requests in Splunk EnterprisePriority MEDIUM 49
    • TI-2026-53369 Remote Code Execution (RCE) through Splunk Web Manager Configuration in Splunk EnterprisePriority MEDIUM 42
    Show all 45 records →
  • Release ·

    Splunk Secure Gateway 3.10.9, 3.8.70, 3.9.23

    5 records Highest priority Priority MEDIUM 1 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2026-53361 Insecure Default Access Control List through the REST API in Splunk Secure GatewayPriority LOW 29
    • TI-2026-53382 SPL Injection through Splunk Web in Splunk Secure GatewayPriority LOW 28
    • TI-2026-53402 Server-Side Request Forgery (SSRF) through the Report Notifications REST API in Splunk Secure GatewayPriority LOW 24
    Show all 5 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-76351
  2. 2026-10-03 Alias added: GHSA-9pvq-j27w-mjfc

References

Advisory 1

  • TI-2026-16444 Unauthenticated Arbitrary File Creation and Truncation in a PostgreSQL Sidecar Service Endpoint in Splunk Enterprise KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-00154 The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly… KEVCVSS 3.1HIGH 7.5
  • TI-2023-24841 Remote code execution (RCE) in Splunk Enterprise through Insecure XML Parsing CVSS 3.1HIGH 8.8
  • TI-2023-15979 ‘edit_user’ Capability Privilege Escalation CVSS 3.1HIGH 8.8
  • TI-2024-30707 Remote Code Execution (RCE) due to insecure session storage configuration in Splunk Enterprise on Windows CVSS 3.1HIGH 8.8
  • TI-2022-21345 Reflected Cross-Site Scripting via the radio template in Splunk Enterprise CVSS 3.1HIGH 8.8
See all 297 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences