Wazuh up to 4.14.3 authenticate excessive authentication

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in Wazuh up to 4.14.3 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /security/user/authenticate. Performing a manipulation results in excessive authentication. This vulnerability is known as CVE-2026-26206. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Wazuh up to 4.14.3. It has been classified as problematic. This affects an unknown part of the file /security/user/authenticate. The manipulation with an unknown input leads to a excessive authentication vulnerability. CWE is classifying the issue as CWE-307. The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it more susceptible to brute force attacks. This is going to have an impact on confidentiality. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-26206 since 02/11/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1110.001 according to MITRE ATT&CK.

Upgrading to version 4.14.4 eliminates this vulnerability.

The vulnerability is also documented in the databases at EUVD (EUVD-2026-26268) and CERT Bund (WID-SEC-2026-1295). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Open Source Wazuh

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.0

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Excessive authentication
CWE: CWE-307 / CWE-799 / CWE-400
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Wazuh 4.14.4

Timelineinfo

02/11/2026 CVE reserved
04/29/2026 +76 days Advisory disclosed
04/29/2026 +0 days VulDB entry created
04/30/2026 +1 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-26206 (🔒)
GCVE (CVE): GCVE-0-2026-26206
GCVE (VulDB): GCVE-100-360195
EUVD: 🔒
CERT Bund: WID-SEC-2026-1295 - Wazuh: Mehrere Schwachstellen

Entryinfo

Created: 04/29/2026 20:55
Updated: 04/30/2026 12:54
Changes: 04/29/2026 20:55 (63), 04/29/2026 22:49 (1), 04/30/2026 12:54 (7)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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