CVE-2026-76320
SPL Injection through Cross-Site Request Forgery (CSRF) in the Event Type Builder in Splunk Web for Splunk Enterprise
Description
In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, an unauthenticated user could cause an authenticated user to run arbitrary Search Processing Language (SPL) searches on their behalf through the Event Type Builder. This could expose all relevant data and stored credentials. The vulnerability is possible when the Event Type Builder accepts cross-site request input and retains SPL-affecting values while building sample event searches. The vulnerability requires the attacker to phish the affected user by tricking them into initiating a request within their browser. The unauthenticated user should not be able to exploit the vulnerability at will. For more information see Automatically find and build event types (https://help.splunk.com/en/splunk-enterprise/manage-knowledge-objects/knowledge-management-manual/9.0/event-types/automatically-find-and-build-event-types) in the Splunk documentation.
INFO
Published Date :
Aug. 19, 2026, 10:17 p.m.
Last Modified :
Aug. 26, 2026, 4:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | d1c1063e-7a18-46af-9102-31f8928bc633 | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Upgrade Splunk Enterprise to a fixed version.
- Apply vendor patches when available.
- Restrict Event Type Builder access if possible.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-76320.
| URL | Resource |
|---|---|
| https://advisory.splunk.com/advisories/SVD-2026-0801 | Mitigation Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-76320 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-76320
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-76320 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-76320 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Aug. 26, 2026
Action Type Old Value New Value Added Reference https://advisory.splunk.com/advisories/SVD-2026-0801 Removed Reference https://advisory.splunk.com/advisories/SVD-2026-0801 Removed Reference Type https://advisory.splunk.com/advisories/SVD-2026-0801 Types: Mitigation, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 26, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-76320', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-26T14:49:20.810627Z'} -
Initial Analysis by [email protected]
Aug. 20, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Added CPE Configuration OR *cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* versions from (including) 10.0.0 up to (excluding) 10.0.9 *cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* versions from (including) 10.2.0 up to (excluding) 10.2.6 *cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* versions from (including) 10.4.0 up to (excluding) 10.4.2 *cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* versions from (including) 9.4.0 up to (excluding) 9.4.14 Added Reference Type Cisco Systems, Inc.: https://advisory.splunk.com/advisories/SVD-2026-0801 Types: Mitigation, Vendor Advisory -
New CVE Received by [email protected]
Aug. 19, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Splunk', 'product': 'Splunk Enterprise', 'versions': [{'status': 'affected', 'version': '10.4', 'lessThan': '10.4.2', 'versionType': 'custom'}, {'status': 'affected', 'version': '10.2', 'lessThan': '10.2.6', 'versionType': 'custom'}, {'status': 'affected', 'version': '10.0', 'lessThan': '10.0.9', 'versionType': 'custom'}, {'status': 'affected', 'version': '9.4', 'lessThan': '9.4.14', 'versionType': 'custom'}]}] Added Description In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, an unauthenticated user could cause an authenticated user to run arbitrary Search Processing Language (SPL) searches on their behalf through the Event Type Builder. This could expose all relevant data and stored credentials. The vulnerability is possible when the Event Type Builder accepts cross-site request input and retains SPL-affecting values while building sample event searches. The vulnerability requires the attacker to phish the affected user by tricking them into initiating a request within their browser. The unauthenticated user should not be able to exploit the vulnerability at will. For more information see Automatically find and build event types (https://help.splunk.com/en/splunk-enterprise/manage-knowledge-objects/knowledge-management-manual/9.0/event-types/automatically-find-and-build-event-types) in the Splunk documentation. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N Added CWE CWE-943 Added Reference https://advisory.splunk.com/advisories/SVD-2026-0801