CVE-2026-76263
Received Received - Intake

Authorization Bypass in Splunk Enterprise Allows SPL2 Module Deletion

Vulnerability report for CVE-2026-76263, 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 and 10.2.6, a user who does not hold the "admin" or "power" Splunk roles could delete Splunk Processing Language version 2 (SPL2) modules belonging to other users through the data management orchestrator interface. The vulnerability does not affect Splunk Enterprise versions below 10.2. The broken object level authorization is possible because the data management orchestrator does not verify that the requesting user owns the target resources before it deletes the modules. For more information see Manage SPL2-based apps (https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.4/meet-splunk-apps/manage-spl2-based-apps) in the Splunk documentation.

CVSS 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 2 associated CPEs
Vendor Product Version / Range
splunk splunk_enterprise From 10.2.0 (exc) to 10.2.6 (exc)
splunk splunk_enterprise From 10.4.2 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-639 The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

Attack-Flow Graph

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Executive Summary

This vulnerability affects Splunk Enterprise versions below 10.4.2 and 10.2.6. A non-admin user can delete SPL2 modules owned by other users through the data management orchestrator interface. The issue occurs because the orchestrator fails to verify ownership before deletion.

Detection Guidance

Check Splunk Enterprise versions below 10.4.2 and 10.2.6 for unauthorized deletions of SPL2 modules. Review logs for data management orchestrator actions by non-admin or non-power users. Use Splunk's internal logging to track module deletion events.

Impact Analysis

An attacker with limited access could delete critical SPL2 modules belonging to other users, potentially disrupting Splunk operations or causing data loss. This could lead to unauthorized modifications or service disruptions.

Mitigation Strategies

Upgrade Splunk Enterprise to version 10.4.2 or 10.2.6 or later. Restrict deletion permissions to admin and power roles only. Monitor and audit SPL2 module deletions regularly.

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