Improper neutralization of HTML-encoded characters in the URL validation function in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an authenticated user to bypass URL validation and inject malicious URLs such as javascript: URIs, resulting in cross-site scripting when another user interacts with the crafted link.
References
| Link | Resource |
|---|---|
| https://checkmk.com/werk/20002 | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
No history.
Information
Published : 2026-06-08 13:16
Updated : 2026-07-23 07:10
NVD link : CVE-2026-8833
Mitre link : CVE-2026-8833
CVE.ORG link : CVE-2026-8833
JSON object : View
Products Affected
checkmk
- checkmk
CWE
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
