CVE-2026-76309
Received Received - Intake

SQL Injection in Splunk Enterprise

Vulnerability report for CVE-2026-76309, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-08-19

Last updated on: 2026-08-19

Assigner: Cisco Systems, Inc.

Description

In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, a low-privileged user that does not hold the "admin" or "power" Splunk roles could inject Structured Query Language (SQL) through the Representational State Transfer (REST) API, causing Splunk Enterprise to evaluate attacker-controlled text as part of a database query. The SQL injection is possible because the REST API incorporates user-supplied filter values into database queries without proper neutralization.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-08-19
Last Modified
2026-08-19
Generated
2026-08-20
AI Q&A
2026-08-20
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
splunk splunk_enterprise to 9.4.14 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

Attack-Flow Graph

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Executive Summary

This vulnerability is a SQL injection flaw in Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14. A low-privileged user without admin or power roles can inject SQL through the REST API by supplying malicious filter values. The API fails to properly neutralize these inputs, allowing attacker-controlled text to be executed as part of a database query.

Detection Guidance

Detecting this vulnerability requires checking Splunk Enterprise versions for exposure. Use commands like 'splunk version' to verify installed versions. Compare against patched versions (10.4.2, 10.2.6, 10.0.9, 9.4.14). Monitor REST API logs for unusual SQL-like query patterns or unauthorized access attempts.

Impact Analysis

An attacker could exploit this to read sensitive data from the Splunk database, potentially exposing confidential information. While the impact is limited (CVSS score 4.3), it may allow unauthorized access to data depending on the database permissions and configuration.

Mitigation Strategies

Immediately upgrade Splunk Enterprise to the latest patched versions (10.4.2, 10.2.6, 10.0.9, or 9.4.14). Restrict low-privileged user access to REST API endpoints. Review and audit user roles to ensure no unauthorized SQL injection attempts are possible.

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