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CVE-2026-26206— Wazuh: API brute-force protection bypass via race condition in login attempt tracking

CVSS 6.5 · Medium EPSS 0.05% · P16
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I. Basic Information for CVE-2026-26206

Vulnerability Information
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Vulnerability Title
Wazuh: API brute-force protection bypass via race condition in login attempt tracking
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
过多认证尝试的限制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Wazuh 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wazuh是Wazuh开源的一个应用软件。用于收集，汇总，索引和分析安全数据，帮助组织检测入侵，威胁和行为异常。 Wazuh 4.0.0版本至4.14.4之前版本存在安全漏洞，该漏洞源于暴力破解保护可被绕过，可能导致更多密码猜测。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
wazuhwazuh >= 4.0.0, < 4.14.4 -

II. Public POCs for CVE-2026-26206

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III. Intelligence Information for CVE-2026-26206

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Same Patch Batch · wazuh · 2026-04-29 · 5 CVEs total

CVE-2026-308939.0 CRITICALWazuh cluster sync path traversal in decompress_files() enables arbitrary file write and c
CVE-2026-414996.5 MEDIUMWazuh: Multiple Heap-based NULL WRITE Buffer Underflows in parse_uname_string()
CVE-2026-282216.5 MEDIUMWazuh: Pre-auth stack-based buffer overflow in wazuh-remoted print_hex_string() due to sig
CVE-2026-262044.4 MEDIUMWazuh: Heap-based NULL WRITE Buffer Underflow in GetAlertData

IV. Related Vulnerabilities

Same product: wazuh
Same vendor: wazuh
Same weakness: CWE-307

V. Comments for CVE-2026-26206

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