CVE-2026-26206 — Wazuh is a free and open source platform used for threat
CVE-2026-26206 — 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. Al
What This Means For You
- If your environment is affected by CWE-307, CWE-362, CWE-367, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-26206 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-26206 - Wazuh API Concurrent Brute-Force Bypass
title: CVE-2026-26206 - Wazuh API Concurrent Brute-Force Bypass
id: scw-2026-04-29-ai-1
status: experimental
level: critical
description: |
Detects potential exploitation of CVE-2026-26206 by identifying multiple concurrent POST requests to the Wazuh API's /security/user/authenticate endpoint from the same source IP. This bypasses sequential brute-force protection, allowing for accelerated password guessing.
author: SCW Feed Engine (AI-generated)
date: 2026-04-29
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-26206/
tags:
- attack.credential_access
- attack.t1110.001
logsource:
category: authentication
detection:
selection:
src_ip|exists:
- "true"
cs-uri|contains:
- "/security/user/authenticate"
cs-method|exact:
- "POST"
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-26206 | vulnerability | CVE-2026-26206 |
| CWE-307 | weakness | CWE-307 |
| CWE-362 | weakness | CWE-362 |
| CWE-367 | weakness | CWE-367 |
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 29, 2026 at 22:16 UTC |
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