CVE-2021-26814

Name: CVE-2021-26814
Creator: NVD / NIST
Published: 2021-03-06T02:15:12.1+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 8.75%

Last modified Jun 17, 2026

CVE-2021-26814 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Wazuh API in Wazuh from 4.0.0 to 4.0.3 allows authenticated users to execute arbitrary code with administrative privileges via /manager/files URI. An authenticated user to the service may exploit incomplete input validation on the /manager/files API to inject arbitrary code within the API service script.. EPSS estimates a 8.75% chance of exploitation in the next 30 days.

Description

Wazuh API in Wazuh from 4.0.0 to 4.0.3 allows authenticated users to execute arbitrary code with administrative privileges via /manager/files URI. An authenticated user to the service may exploit incomplete input validation on the /manager/files API to inject arbitrary code within the API service script.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

8.75%

94.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Wazuh	Wazuh	>= 4.0.0, <= 4.0.3

References

https://documentation.wazuh.com/4.0/release-notes/release_4_0_4.htmlRelease Notes, Vendor Advisory
https://github.com/wazuh/wazuh/releases/tag/v4.0.4Release Notes, Third Party Advisory
https://documentation.wazuh.com/4.0/release-notes/release_4_0_4.htmlRelease Notes, Vendor Advisory
https://github.com/wazuh/wazuh/releases/tag/v4.0.4Release Notes, Third Party Advisory

Timeline

Published: Mar 6, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26814?

How severe is CVE-2021-26814?

CVE-2021-26814 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 8.75% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26814?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-26814?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST