CVE-2026-26206
Wazuh: API brute-force protection bypass via race condition in login attempt tracking
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.
INFO
Published Date :
April 29, 2026, 7:16 p.m.
Last Modified :
April 30, 2026, 8:38 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Wazuh server to version 4.14.4 or later.
- Apply security patches for Wazuh.
- Review and enforce authentication policies.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-26206.
| URL | Resource |
|---|---|
| https://github.com/wazuh/wazuh/releases/tag/v4.14.4 | Release Notes |
| https://github.com/wazuh/wazuh/security/advisories/GHSA-m2mr-xhhv-jx58 | Exploit Vendor Advisory |
| https://github.com/wazuh/wazuh/security/advisories/GHSA-m2mr-xhhv-jx58 | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-26206 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-26206
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-26206 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-26206 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 30, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:* versions from (including) 4.0.0 up to (excluding) 4.14.4 Added Reference Type GitHub, Inc.: https://github.com/wazuh/wazuh/releases/tag/v4.14.4 Types: Release Notes Added Reference Type CISA-ADP: https://github.com/wazuh/wazuh/security/advisories/GHSA-m2mr-xhhv-jx58 Types: Exploit, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/wazuh/wazuh/security/advisories/GHSA-m2mr-xhhv-jx58 Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 29, 2026
Action Type Old Value New Value Added Reference https://github.com/wazuh/wazuh/security/advisories/GHSA-m2mr-xhhv-jx58 -
New CVE Received by [email protected]
Apr. 29, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Added CWE CWE-362 Added CWE CWE-307 Added CWE CWE-367 Added Reference https://github.com/wazuh/wazuh/releases/tag/v4.14.4 Added Reference https://github.com/wazuh/wazuh/security/advisories/GHSA-m2mr-xhhv-jx58