CVE-2023-22288

Name: CVE-2023-22288
Creator: NVD / NIST
Published: 2023-03-20T16:15:13.12+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2023-22288 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. HTML Email Injection in Tribe29 Checkmk <=2.1.0p23; <=2.0.0p34, and all versions of Checkmk 1.6.0 allows an authenticated attacker to inject malicious HTML into Emails. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

HTML Email Injection in Tribe29 Checkmk <=2.1.0p23; <=2.0.0p34, and all versions of Checkmk 1.6.0 allows an authenticated attacker to inject malicious HTML into Emails

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.40%

31.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Checkmk	Checkmk	2.0.0
Checkmk	Checkmk	2.1.0
Tribe29	Checkmk	>= 1.6.0, < 2.0.0

References

https://checkmk.com/werk/15069Vendor Advisory
https://checkmk.com/werk/15069Vendor Advisory

Timeline

Published: Mar 20, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-22288?

HTML Email Injection in Tribe29 Checkmk <=2.1.0p23; <=2.0.0p34, and all versions of Checkmk 1.6.0 allows an authenticated attacker to inject malicious HTML into Emails

How severe is CVE-2023-22288?

CVE-2023-22288 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2023-22288?

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-2023-22288?

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

Scan your code now

Source: NVD / NIST