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

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 formats

3 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.

critical T1110.001 Credential Access

CVE-2026-26206 - Wazuh API Concurrent Brute-Force Bypass

Sigma YAML — free preview
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

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Indicators of Compromise

IDTypeIndicator
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 PlatformNVD
ChannelNational Vulnerability Database
PublishedApril 29, 2026 at 22:16 UTC

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