# CVE-2026-76387: SPL Injection through the REST API in Splunk Enterprise Security

> CVE-2026-76387: SPL Injection through the REST API in Splunk Enterprise Security. CVSS 8.1 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-76387
Last updated: 2026-08-25T16:30:13Z

- Published: 2026-08-19 21:35 UTC · Updated: 2026-08-25 16:30 UTC · Assigner: cisco
- CVSS: 8.1 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- EPSS: 0.40%, 34th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-20

## Description

In Splunk Enterprise Security versions below 8.6.1, a user who holds a Splunk Enterprise Security role that contains the mc\_investigation\_read capability could inject Search Processing Language (SPL) through Analyst Queue search filters, allowing for access to all relevant data and system integrity available to the scheduled searches that run for that user. The vulnerability is possible because the Analyst Queue search filter handling does not validate filter field names before the fields are included in SPL searches. For more information see Users and roles for Splunk Enterprise Security (https://help.splunk.com/en/splunk-enterprise-security-8/install/8.4/installation/users-and-roles-for-splunk-enterprise-security), Manage analyst workflows using the analyst queue in Splunk Enterprise Security (https://help.splunk.com/en/splunk-enterprise-security-8/administer/8.4/mission-control/manage-analyst-workflows-using-the-analyst-queue-in-splunk-enterprise-security), and Overview of Mission Control in Splunk Enterprise Security (https://help.splunk.com/en/splunk-enterprise-security-8/user-guide/8.5/mission-control/overview-of-mission-control-in-splunk-enterprise-security) in the Splunk documentation.

## Affected vendors and products

- Splunk: Splunk Enterprise Security

## Tracked companies

- [Splunk](https://rewindex.com/company/splunk.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-76387)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-76387)
- [https://advisory.splunk.com/advisories/SVD-2026-0807](https://advisory.splunk.com/advisories/SVD-2026-0807)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-76387 · Markdown: https://rewindex.com/cve/CVE-2026-76387.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-76387 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:49:49.712Z