CVE-2026-26206

medium

Published 2026-04-29 · Modified 2026-04-30

CVSS v3

6.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS v2

—

VIR risk

6.5

Description

Wazuh is a free and open source platform used for threat prevention, detection, and response. From version 4.0.0 to before version 4.14.4, Wazuh's server API brute-force protection for POST /security/user/authenticate can be bypassed by sending concurrent authentication requests. Although the configured threshold (max_login_attempts, default 50) is enforced correctly for sequential requests, a parallel burst allows significantly more failed login attempts to be processed before the IP block is applied. This enables an attacker to perform more password guesses than the configured policy intends (e.g., 100 attempts processed where 50 should be allowed). This issue has been patched in version 4.14.4.

Predictions

Exploit likelihood

75%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: security-advisories@github.com — https://github.com/wazuh/wazuh/security/advisories/GHSA-m2mr-xhhv-jx58

vendor Authored 2026-05-27

Vendor advisory: security-advisories@github.com — https://github.com/wazuh/wazuh/releases/tag/v4.14.4

Application impact

Vendor	Product	Versions	Fixed
wazuh	wazuh	`{"startIncluding":"4.0.0","endExcluding":"4.14.4"}`	`4.14.4`

References

CWEs

CWE-307 CWE-362 CWE-367

Verify integrity in audit chain (admin only). AS-IS.