CVE-2023-22359

Name: CVE-2023-22359
Creator: NVD / NIST
Published: 2023-06-26T07:15:09.297+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.41%

Last modified Jun 17, 2026

CVE-2023-22359 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. User enumeration in Checkmk <=2.2.0p4 allows an authenticated attacker to enumerate usernames.. EPSS estimates a 0.41% chance of exploitation in the next 30 days.

Description

User enumeration in Checkmk <=2.2.0p4 allows an authenticated attacker to enumerate usernames.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.41%

32.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-203

Affected Software

Vendor	Product	Versions
Checkmk	Checkmk	2.2.0

References

https://checkmk.com/werk/15890Vendor Advisory
https://checkmk.com/werk/15890Vendor Advisory

Timeline

Published: Jun 26, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-22359?

User enumeration in Checkmk <=2.2.0p4 allows an authenticated attacker to enumerate usernames.

How severe is CVE-2023-22359?

CVE-2023-22359 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.41% probability of exploitation in the next 30 days.

How do I fix CVE-2023-22359?

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-2023-22359?

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

Scan your code now

Source: NVD / NIST