CVE-2026-33456— Potential livestatus injection in notification test
Quick assessment
Affected
Checkmk GmbH Checkmk
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Checkmk是Checkmk公司的一个 IT 监控平台。 Checkmk 2.5.0b4之前版本和2.4.0p26之前版本存在安全漏洞，该漏洞源于通知测试模式中的Livestatus注入，可能导致经过身份验证的用户通过特制服务描述注入任意Livestatus命令。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-33456
Vulnerability Information
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Vulnerability Title
Potential livestatus injection in notification test
Source: CVE Program / CVE List V5
Vulnerability Description
Livestatus injection in the notification test mode in Checkmk <2.5.0b4 and <2.4.0p26 allows an authenticated user with access to the notification test page to inject arbitrary Livestatus commands via a crafted service description.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
分隔符转义处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Checkmk 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Checkmk是Checkmk公司的一个 IT 监控平台。 Checkmk 2.5.0b4之前版本和2.4.0p26之前版本存在安全漏洞，该漏洞源于通知测试模式中的Livestatus注入，可能导致经过身份验证的用户通过特制服务描述注入任意Livestatus命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Checkmk GmbH | Checkmk | 2.5.0 ~ 2.5.0b4 | - |
|
II. Public POCs for CVE-2026-33456
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-33456 (1)
Same Patch Batch · Checkmk GmbH · 2026-04-10 · 3 CVEs total
| CVE-2026-33455 | Livestatus injection in monitoring quicksearch | |
| CVE-2026-33457 | Potential livestatus injection in prediction graph page |
IV. Related Vulnerabilities
Same product: Checkmk
-
CVE-2026-90990
Livestatus injection via monitoring filter values -
CVE-2026-92882
Redact SNMP community, SNMPv3 pass phrases, and IPMI passwor -
CVE-2026-77021
Missing decompression size limit in agent receiver allows me -
CVE-2026-15937
Agent receiver certificate confusion allows authentication w -
CVE-2026-17548
Missing authorization for viewing background jobs
Same vendor: Checkmk GmbH
-
CVE-2026-90990
Livestatus injection via monitoring filter values -
CVE-2026-92882
Redact SNMP community, SNMPv3 pass phrases, and IPMI passwor -
CVE-2026-77021
Missing decompression size limit in agent receiver allows me -
CVE-2026-15937
Agent receiver certificate confusion allows authentication w -
CVE-2026-17548
Missing authorization for viewing background jobs
Same weakness: CWE-140
-
CVE-2026-33457
Potential livestatus injection in prediction graph page -
CVE-2026-33455
Livestatus injection in monitoring quicksearch -
CVE-2025-52989
Junos OS and Junos OS Evolved: Annotate configuration comman -
CVE-2025-32918
Livestatus injection in autocomplete endpoint -
CVE-2025-48879
OctoPrint Vulnerable to Denial of Service through malformed
V. Comments for CVE-2026-33456
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