CVE-2026-33456

{"id": "CVE-2026-33456", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33456", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-04-14T03:55:37.035774Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.6, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 4.7, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "security@checkmk.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 5.1, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "LOW", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "security@checkmk.com", "affectedData": [{"vendor": "Checkmk GmbH", "product": "Checkmk", "versions": [{"status": "affected", "version": "2.5.0", "lessThan": "2.5.0b4", "versionType": "semver"}, {"status": "affected", "version": "2.4.0", "lessThan": "2.4.0p26", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-04-10T09:16:24.493", "references": [{"url": "https://checkmk.com/werk/17989", "tags": ["Vendor Advisory"], "source": "security@checkmk.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@checkmk.com", "description": [{"lang": "en", "value": "CWE-140"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-06-17T10:37:31.693", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "022C075A-4B04-4141-A7D7-F93C9A7CE0FD"}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:b1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "60C00469-0CD1-4E9C-8370-CE113842056C"}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:b2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "179905FC-821F-4214-A872-E4E3702419D1"}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.4.0:b3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": 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