CVE-2026-56146 Elastic CVE debrief

Who should care

Users of Kibana with Security Solution access, especially those with low-privileged authenticated users, should be aware of this vulnerability and take necessary precautions to restrict access and monitor for unusual activity.

Technical summary

CVE-2026-56146 is an Improper Access Control vulnerability in Kibana, allowing a low-privileged authenticated user with read-only Security Solution access to perform write operations on watchlist data. This could lead to unauthorized modification of Entity Analytics Watchlist configuration and potential information disclosure. The vulnerability has a CVSS score of 5.4 and a severity of MEDIUM. Users with Security Solution access, especially those with low-privileged authenticated users, should be aware of this vulnerability and take necessary precautions.

Defensive priority

Medium priority due to potential for unauthorized data modification and disclosure.

Recommended defensive actions

• Inventory and verify Kibana configurations, especially Entity Analytics Watchlist settings.
• Restrict access to Security Solution features for low-privileged users.
• Monitor for unusual activity related to watchlist data modifications.
• Apply vendor patches or updates as soon as available.
• Review and adjust user privileges and access controls.
• Perform regular security audits and vulnerability assessments.
• Implement additional monitoring and logging to detect potential security incidents.

Evidence notes

The CVE record was published on 2026-07-21T20:17:02.613Z and has not been modified since then. The NVD entry is currently Awaiting Analysis. The vulnerability is related to CWE-284 and has a CVSS vector of CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity with the vendor.

Official resources