CVE-2026-56152 in Elastic Defend
Incorrect Authorization (CWE-863) in Elastic Defend can lead to unauthorized information disclosure via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Under certain conditions, a low-privileged authenticated user can access response action data that they are not authorized to view.
Quick answer
Elastic Defend should be reviewed and updated if it matches the affected versions. The recommended fix is to apply the vendor-supported patched version or the mitigation steps below, then retest the public website with Fixnx.
Who is affected
Affected versions
- Elastic Defend 8.6.0 through 8.19.12
- Elastic Defend 9.0.0 through 9.2.6
- Elastic Defend 9.3.0 through 9.3.1
Fixed versions
- Elastic Defend 8.19.13 or later
- Elastic Defend 9.2.7 or later
- Elastic Defend 9.3.2 or later
How to fix it
CVE-2026-56152 affects Elastic Defend. In simple terms, private data may be shown to someone who should not see it. Update to Elastic Defend 8.19.13 or later; Elastic Defend 9.2.7 or later; Elastic Defend 9.3.2 or later. If you cannot update today, limit who can reach this system until the fix is done.
- Find every place where Elastic Defend is installed or used.
- Check if the version matches: Elastic Defend 8.6.0 through 8.19.12; Elastic Defend 9.0.0 through 9.2.6; Elastic Defend 9.3.0 through 9.3.1.
- Update to: Elastic Defend 8.19.13 or later; Elastic Defend 9.2.7 or later; Elastic Defend 9.3.2 or later.
- If you cannot update now, allow only trusted users and trusted networks.
- Check logs for crashes, strange requests, failed logins, or unexpected access.
- Change secrets or passwords if you think data may have been exposed.
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Verify the fix
- Confirm the installed version is now: Elastic Defend 8.19.13 or later; Elastic Defend 9.2.7 or later; Elastic Defend 9.3.2 or later.
- Confirm the risky feature is no longer exposed to untrusted users.
- Run the affected workflow again and make sure it still works.
- Review logs again after the update.
- Run a new Fixnx scan if this software is part of a public website.
Related categories
Trusted references
FAQ
What is affected by CVE-2026-56152?
Elastic Defend versions listed as affected should be reviewed: Elastic Defend 8.6.0 through 8.19.12, Elastic Defend 9.0.0 through 9.2.6, Elastic Defend 9.3.0 through 9.3.1.
What should I fix first?
Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.
How do I confirm the fix worked?
Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.
How are Fixnx security risk categories chosen?
Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.