CVE-2026-76349 Splunk CVE debrief

Who should care

Splunk Enterprise administrators and users, especially those with access to sensitive data, should be aware of this vulnerability and take necessary precautions to prevent exploitation. This includes reviewing and restricting access to Splunk Web, implementing compensating controls, and educating users about phishing attacks and safe browsing practices.

Technical summary

The vulnerability exists in Splunk Enterprise versions below 10.2.6, 10.0.9, and 9.4.14. An unauthenticated user could trick an authenticated user into running arbitrary SPL commands using the permissions of the authenticated user through a crafted Splunk Web link. The SPL commands could access all relevant data. The vulnerability requires the attacker to phish the user by tricking them into opening the crafted link. The vulnerability does not affect Splunk Enterprise 10.4 versions and above.

Defensive priority

Medium-priority defensive actions are required to address this vulnerability, as it allows an unauthenticated user to trick an authenticated user into running arbitrary Search Processing Language (SPL) commands.

Recommended defensive actions

• Inventory and verify affected Splunk Enterprise versions.
• Restrict access to Splunk Web for unauthenticated users.
• Implement compensating controls, such as monitoring and exception tracking.
• Apply vendor remediation when available.
• Educate users about phishing attacks and safe browsing practices.
• Review 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.

Evidence notes

The vulnerability exists in Splunk Enterprise versions below 10.2.6, 10.0.9, and 9.4.14. An unauthenticated user could trick an authenticated user into running arbitrary SPL commands using the permissions of the authenticated user through a crafted Splunk Web link. The SPL commands could access all relevant data. The vulnerability requires the attacker to phish the user by tricking them into opening the crafted link.

Official resources