Description
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.
Affected products
wazuh: wazuh
References6
- github.com/wazuh/wazuh/security/advisories/GHSA-3978-44q9-9px9 ExploitVendor Advisory
- github.com/wazuh/wazuh/security/advisories/GHSA-3978-44q9-9px9 ExploitVendor Advisory
- github.com/wazuh/wazuh/commit/5ecea7b38b998407cb0d205467dd24714… Patch
- github.com/wazuh/wazuh/pull/35757 Issue TrackingPatch
- github.com/wazuh/wazuh/releases/tag/v4.14.6 Release Notes
- github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2 Release Notes
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - EPSS — exploit probability
- 1% percentile: 50 · as of 10 November 2026
- CWE
- CWE-208
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.