CVE-2026-44255

Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.0.0 until 4.14.6 and 5.0.0-beta2, AuthenticationManager.check_user() in framework/wazuh/rbac/orm.py performs check_password_hash() only when the supplied username exists. A nonexistent username returns immediately, while a valid username causes an expensive bcrypt calculation. An unauthenticated remote attacker can compare authentication response times to enumerate valid Wazuh usernames and use that information in subsequent credential attacks. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.

• CWE-208

• https://github.com/wazuh/wazuh/commit/5ecea7b38b998407cb0d205467dd247140a0f981Patch
• https://github.com/wazuh/wazuh/pull/35757Issue Tracking, Patch
• https://github.com/wazuh/wazuh/releases/tag/v4.14.6Release Notes
• https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2Release Notes
• https://github.com/wazuh/wazuh/security/advisories/GHSA-3978-44q9-9px9Exploit, Vendor Advisory
• https://github.com/wazuh/wazuh/security/advisories/GHSA-3978-44q9-9px9Exploit, Vendor Advisory

Published

Aug 19, 2026

Last Modified

Sep 18, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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