CVE-2026-76336 Splunk CVE debrief

Who should care

Splunk Enterprise users, administrators, and security teams should be aware of this vulnerability and take necessary actions to patch or mitigate it. They should review their deployments, assess potential impact, and prioritize patching to prevent unauthorized deletion of SPL2 modules. Security teams should also monitor for unauthorized module deletion requests and implement compensating controls where necessary. Additionally, operators and platform administrators should verify their configurations and ensure proper authorization and validation are in place for SPL2 module management REST API requests. Vulnerability management teams should track exceptions and retest remediated assets to ensure the vulnerability is properly addressed. Asset inventory management should also be reviewed to ensure accurate tracking of affected systems. Overall, a coordinated effort is required across various teams to effectively address this vulnerability and minimize potential disruption to Splunk Enterprise services. The vulnerability can cause partial service disruption and affect system integrity if not properly addressed. Therefore, it is crucial for all relevant stakeholders to take prompt action to mitigate the vulnerability and prevent potential security incidents. This includes reviewing and updating incident response plans, conducting thorough risk assessments, and implementing additional security controls as needed to prevent similar vulnerabilities in the future. By taking proactive measures, organizations can minimize the risk associated with this vulnerability and ensure the security and integrity of their Splunk Enterprise deployments. It is also essential to stay informed about any updates or patches released by the vendor and to apply them promptly to prevent exploitation of the vulnerability. Furthermore, organizations should consider implementing monitoring and detection mechanisms to identify potential security incidents related to this vulnerability and respond promptly to any detected threats. By prioritizing patching and taking a proactive approach to security, organizations can effectively mitigate the risk associated with this vulnerability and protect thei

Technical summary

The vulnerability exists in Splunk Enterprise versions below 10.4.2 and 10.2.6 due to insufficient authorization and validation in the SPL2 module management REST API. This allows users without 'admin' or 'power' roles to delete SPL2 modules across all apps and users, affecting system integrity and causing partial service disruption. The vulnerability does not affect Splunk Enterprise versions below 10.2.

Defensive priority

Users of Splunk Enterprise versions below 10.4.2 and 10.2.6 should prioritize patching to prevent unauthorized deletion of SPL2 modules.

Recommended defensive actions

• Patch Splunk Enterprise to version 10.4.2 or 10.2.6 or later
• Restrict access to the SPL2 module management REST API
• Monitor for unauthorized module deletion requests
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The vulnerability exists in Splunk Enterprise versions below 10.4.2 and 10.2.6 due to insufficient authorization and validation in the SPL2 module management REST API. Evidence is based on official CVE and NVD records. Affected users should verify their deployments and review official advisories for mitigation steps. The CVE record was published on 2026-08-19T22:17:18.093Z and has not been modified since then.

Official resources