Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 (EOL) allows authenticated users to enumerate existing hosts by observing different HTTP response codes in agent-receiver/register_existing endpoint, which could lead to information disclosure.
References
| Link | Resource |
|---|---|
| https://checkmk.com/werk/18993 | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
18 Mar 2026, 13:37
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:checkmk:checkmk:2.2.0:b2:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p45:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p17:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p6:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p18:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:b1:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:b2:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p5:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p19:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p11:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p7:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p19:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p41:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p4:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p11:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p9:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p4:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:b7:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:b4:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p20:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p39:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:b3:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p26:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p10:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p18:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p9:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p8:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p20:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p25:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:b1:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p38:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p26:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p14:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p8:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p2:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:b6:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p37:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p8:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:b4:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p15:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:b1:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p21:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p35:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p13:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p22:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:-:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:b5:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p38:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p41:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p16:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p37:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:b3:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p28:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:b2:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p33:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p10:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p12:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p34:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p21:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p24:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p3:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:-:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p31:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p3:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p19:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p29:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p40:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p16:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p6:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p5:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:b6:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p42:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p23:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p29:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p35:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p2:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p10:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p7:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p12:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p5:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p42:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p11:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p1:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p13:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p1:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:b3:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p43:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p4:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p23:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p6:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p33:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p24:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p17:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p39:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p16:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p17:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p1:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:i1:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p47:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p30:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p15:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p44:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p14:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p30:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p7:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p18:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p20:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:b5:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p2:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p21:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p13:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p34:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:-:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p32:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p3:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p22:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:b4:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p36:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:b5:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p12:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p15:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p27:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p36:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p28:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p25:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p40:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p22:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:b6:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p27:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p46:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p14:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.3.0:p31:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:p32:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.2.0:b8:*:*:*:*:*:* cpe:2.3:a:checkmk:checkmk:2.4.0:p9:*:*:*:*:*:* |
|
| First Time |
Checkmk
Checkmk checkmk |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 4.3 |
| References | () https://checkmk.com/werk/18993 - Vendor Advisory |
13 Mar 2026, 19:54
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-03-13 19:54
Updated : 2026-03-18 13:37
NVD link : CVE-2026-24097
Mitre link : CVE-2026-24097
CVE.ORG link : CVE-2026-24097
JSON object : View
Products Affected
checkmk
- checkmk
CWE
CWE-204
Observable Response Discrepancy
