Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Wazuh | Wazuh | >= 4.0.0, < 4.14.6 |
Related Weaknesses (CWE)
References
- https://github.com/wazuh/wazuh/commit/5ecea7b38b998407cb0d205467dd247140a0f981Patch
- https://github.com/wazuh/wazuh/pull/35757Issue TrackingPatch
- 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-3978-44q9-9px9ExploitVendor Advisory
- https://github.com/wazuh/wazuh/security/advisories/GHSA-3978-44q9-9px9ExploitVendor Advisory
FAQ
What is CVE-2026-44255?
CVE-2026-44255 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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...
How severe is CVE-2026-44255?
CVE-2026-44255 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-44255?
Check the references section above for vendor advisories and patch information. Affected products include: Wazuh Wazuh.