Remote Command Execution (RCE) through the '/splunkd/__upload/indexing/preview' REST endpoint in Splunk Enterprise
Priority LOW 38CWE-77Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- 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 10.2.0, 10.0.4, 9.4.9, and 9.3.10, and Splunk Cloud Platform versions below 10.2.2510.5, 10.0.2503.12, 10.1.2507.16, and 9.3.2411.124, a user who holds a role that contains the high-privilege capability `edit_cmd` could execute arbitrary shell commands using the `unarchive_cmd` parameter for the `/splunkd/__upload/indexing/preview` REST endpoint.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00537 45th percentileScored 2026-11-07
Fix Fixed Splunk Enterprise (Splunk): 10.0.4, 9.4.9, 9.3.10Splunk Cloud Platform (Splunk): 10.2.2510.5, 10.0.2503.12, 10.1.2507.16 +1
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Splunk | Splunk Enterprise | 10.0 to before 10.0.4; 9.4 to before 9.4.9; 9.3 to before 9.3.10 | 10.0.4, 9.4.9, 9.3.10 | Patch available | CNA |
| Splunk | Splunk Cloud Platform | 10.2.2510 to before 10.2.2510.5; 10.0.2503 to before 10.0.2503.12; 10.1.2507 to before 10.1.2507.16; 9.3.2411 to before 9.3.2411.124 | 10.2.2510.5, 10.0.2503.12, 10.1.2507.16, 9.3.2411.124 | Patch available | CNA |
- Splunk Enterprise VendorSplunk Affected 10.0 to before 10.0.4; 9.4 to before 9.4.9; 9.3 to before 9.3.10 Fixed in 10.0.4, 9.4.9, 9.3.10 Patch available CNA
- Splunk Cloud Platform VendorSplunk Affected 10.2.2510 to before 10.2.2510.5; 10.0.2503 to before 10.0.2503.12; 10.1.2507 to before 10.1.2507.16; 9.3.2411 to before 9.3.2411.124 Fixed in 10.2.2510.5, 10.0.2503.12, 10.1.2507.16, 9.3.2411.124 Patch available CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* | 9.3.0 to before 9.3.10; 9.4.0 to before 9.4.9; 10.0.0 to before 10.0.4 | Vulnerable | Splunk |
| cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:* | 9.3.2411 to before 9.3.2411.124; 10.0.2503 to before 10.0.2503.12; 10.1.2507 to before 10.1.2507.16; 10.2.2510 to before 10.2.2510.5 | Vulnerable | Splunk |
- cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* Versions 9.3.0 to before 9.3.10; 9.4.0 to before 9.4.9; 10.0.0 to before 10.0.4 Vulnerable ·Splunk
- cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:* Versions 9.3.2411 to before 9.3.2411.124; 10.0.2503 to before 10.0.2503.12; 10.1.2507 to before 10.1.2507.16; 10.2.2510 to before 10.2.2510.5 Vulnerable ·Splunk
Remediation
- Fix · CNA Splunk Enterprise (Splunk) Fixed in 10.0.4, 9.4.9, 9.3.10
- Fix · CNA Splunk Cloud Platform (Splunk) Fixed in 10.2.2510.5, 10.0.2503.12, 10.1.2507.16, 9.3.2411.124
Timeline
- 2026-10-02 Threatist record created from CVE-2026-20163
- 2026-10-03 Alias added: GHSA-7vjc-jh6c-q29g
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-2026-20163 · CVE Program
- CVE-2026-20163 · NVD
- FIRST EPSS
- GHSA-7vjc-jh6c-q29g · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences