What’s Vulnerable › Vulnerabilities
CVE-2023-22288: Email HTML Injection
- Severity: medium (CVSS 5.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2023-03-20 · updated 2026-06-17
- Weakness: CWE-138
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
Affected products
- Checkmk GmbH Checkmk: 2.0.0, 2.0.0-b1, 2.0.0-b2, 2.0.0-b3, 2.0.0-b4, 2.0.0-b5 (+70)
- Tribe29 Checkmk: from 1.6.0 before 2.0.0 — fixed in 2.0.0
How to fix
Upgrade to a fixed version: Tribe29 Checkmk 2.0.0. Check the vendor advisory for mitigations.
References
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