Stored cross-site scripting in the service discovery active check output in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an administrator who can configure active or custom checks to inject malicious HTML or JavaScript into check output that executes in the browser of an admin or a user with host read permissions when they run the check on the service discovery page.
References
| Link | Resource |
|---|---|
| https://checkmk.com/werk/17993 | 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-2026-9549
Mitre link : CVE-2026-9549
CVE.ORG link : CVE-2026-9549
JSON object : View
Products Affected
checkmk
- checkmk
CWE
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
