User-enumeration in RestAPI
Priority LOW 21CWE-203Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-203.
Summary
User enumeration in Checkmk <=2.2.0p4 allows an authenticated attacker to enumerate usernames.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.005 43rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Tribe29 | Checkmk | 2.2.0 – 2.2.0p4 | — | No fix listed | CNA |
- Checkmk VendorTribe29 Affected 2.2.0 – 2.2.0p4 Fixed in — No fix listed CNA
CPE configurations NVD · 14
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:checkmk:checkmk:2.2.0:-:*:*:*:*:*:* | 2.2.0 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.2.0:b1:*:*:*:*:*:* | 2.2.0 b1 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.2.0:b2:*:*:*:*:*:* | 2.2.0 b2 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.2.0:b3:*:*:*:*:*:* | 2.2.0 b3 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.2.0:b4:*:*:*:*:*:* | 2.2.0 b4 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.2.0:b5:*:*:*:*:*:* | 2.2.0 b5 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.2.0:b6:*:*:*:*:*:* | 2.2.0 b6 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.2.0:b7:*:*:*:*:*:* | 2.2.0 b7 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.2.0:b8:*:*:*:*:*:* | 2.2.0 b8 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.2.0:i1:*:*:*:*:*:* | 2.2.0 i1 | Vulnerable | Checkmk GmbH |
- cpe:2.3:a:checkmk:checkmk:2.2.0:-:*:*:*:*:*:* Versions 2.2.0 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.2.0:b1:*:*:*:*:*:* Versions 2.2.0 b1 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.2.0:b2:*:*:*:*:*:* Versions 2.2.0 b2 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.2.0:b3:*:*:*:*:*:* Versions 2.2.0 b3 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.2.0:b4:*:*:*:*:*:* Versions 2.2.0 b4 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.2.0:b5:*:*:*:*:*:* Versions 2.2.0 b5 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.2.0:b6:*:*:*:*:*:* Versions 2.2.0 b6 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.2.0:b7:*:*:*:*:*:* Versions 2.2.0 b7 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.2.0:b8:*:*:*:*:*:* Versions 2.2.0 b8 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.2.0:i1:*:*:*:*:*:* Versions 2.2.0 i1 Vulnerable ·Checkmk GmbH
Show 4 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:checkmk:checkmk:2.2.0:p1:*:*:*:*:*:* | 2.2.0 p1 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.2.0:p2:*:*:*:*:*:* | 2.2.0 p2 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.2.0:p3:*:*:*:*:*:* | 2.2.0 p3 | Vulnerable | Checkmk GmbH |
| cpe:2.3:a:checkmk:checkmk:2.2.0:p4:*:*:*:*:*:* | 2.2.0 p4 | Vulnerable | Checkmk GmbH |
- cpe:2.3:a:checkmk:checkmk:2.2.0:p1:*:*:*:*:*:* Versions 2.2.0 p1 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.2.0:p2:*:*:*:*:*:* Versions 2.2.0 p2 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.2.0:p3:*:*:*:*:*:* Versions 2.2.0 p3 Vulnerable ·Checkmk GmbH
- cpe:2.3:a:checkmk:checkmk:2.2.0:p4:*:*:*:*:*:* Versions 2.2.0 p4 Vulnerable ·Checkmk GmbH
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-22359
- 2026-10-03 Alias added: GHSA-r33q-ccvx-f3w8
References
Advisory 1
More Tribe29 vulnerabilities
- TI-2021-17818 The web management console of CheckMK Enterprise Edition (versions 1.5.0 to 2.0.0p9) does… CVSS 3.1HIGH 8.8
- TI-2023-14915 Command injection via active checks and REST API CVSS 3.1HIGH 8.8
- TI-2022-23931 Insecure Termination of RestAPI Session Tokens CVSS 3.1CRITICAL 9.8
- TI-2022-23182 Improper input validation in Tribe29 Checkmk CVSS 3.1CRITICAL 9.1
- TI-2023-14914 Livestatus command injection in RestAPI CVSS 3.1HIGH 8.8
- TI-2023-08583 Denial of service against webconf CVSS 3.1HIGH 7.5
Sources
- CVE-2023-22359 · CVE Program
- CVE-2023-22359 · NVD
- FIRST EPSS
- GHSA-r33q-ccvx-f3w8 · GitHub Advisory Database · CC BY 4.0
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