Denial of Service Vulnerability in Wazuh Authentication Middleware
CVE-2026-25771

5.3MEDIUM

Key Information:

Vendor

Wazuh

Status
Wazuh
Vendor
CVE Published:
17 March 2026

What is CVE-2026-25771?

A Denial of Service vulnerability was identified in the Wazuh API, affecting versions 4.3.0 to 4.14.3. The issue arises due to the API's authentication middleware, which improperly handles asynchronous calls, allowing unauthenticated attackers to exploit the system. By sending a high volume of requests with invalid Bearer tokens, an attacker can overload the synchronous function responsible for disk I/O operations. This leads to significant delays in processing legitimate requests and ultimately may render the application incapable of functioning as intended. The vulnerability has been addressed in version 4.14.3.

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Affected Version(s)

wazuh >= 4.3.0, < 4.14.3

References

https://github.com/wazuh/wazuh/security/advisories/GHSA-3...
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CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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