SPL Injection through Nearby Event Searches in Splunk Enterprise
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-77.
Summary
In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, an unauthenticated user could inject arbitrary Search Processing Language (SPL) into requests that search for events near a selected event. This could allow for unauthorized search execution. The vulnerability is possible because Splunk Web does not consistently escape caller-supplied values when it builds SPL for nearby-event searches, and embedded report access accepts those requests without the expected authorization check. For more information see Use time to find nearby events (https://help.splunk.com/en/splunk-enterprise/search/search-manual/10.2/specify-time-ranges/use-time-to-find-nearby-events) in the Splunk documentation.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Splunk | Splunk Enterprise | 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 | 10.4.2, 10.2.6, 10.0.9, 9.4.14 | Patch available | CNA |
- 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
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| 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 10.4.2 | Vulnerable | Splunk |
- 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
Remediation
- Fix · CNA Splunk Enterprise (Splunk) Fixed in 10.4.2, 10.2.6, 10.0.9, 9.4.14
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
Timeline
- 2026-10-02 Threatist record created from CVE-2026-76321
- 2026-10-03 Alias added: GHSA-9c88-8r2m-69jp
References
More Splunk vulnerabilities
- 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
Sources
- CVE-2026-76321 · CVE Program
- CVE-2026-76321 · NVD
- FIRST EPSS
- GHSA-9c88-8r2m-69jp · GitHub Advisory Database · CC BY 4.0
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