CVE-2026-7765

{"id": "CVE-2026-7765", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "security@checkmk.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/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": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "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"}}]}, "published": "2026-06-08T13:16:33.627", "references": [{"url": "https://checkmk.com/werk/19815", "tags": ["Vendor Advisory"], "source": "security@checkmk.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@checkmk.com", "description": [{"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "Incorrect authorization in the User Messages dashboard widget in Checkmk <2.5.0p5 causes the message-fetching endpoints to return the dashboard creator's messages rather than the viewer's, allowing an attacker who knows a valid public dashboard share token to read the issuer's personal messages by sending requests to the underlying endpoint, even without a User Messages widget present."}], "lastModified": "2026-06-09T14:49:38.500", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:checkmk:checkmk:2.5.0:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7797AFCE-3FF9-497C-AEA9-D6CF170F056D"}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.5.0:b1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F8943BB3-1487-494C-B4EB-89EB0B18B6A2"}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.5.0:b2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5342045D-CB9F-4663-9538-8B657C9AC833"}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.5.0:b3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E9566834-D4EE-4104-AD60-7988FCF17224"}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.5.0:p1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F53BB4AD-54A6-4A77-868A-D6972DDF0EAA"}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.5.0:p2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0405E40E-7969-49B3-90EC-98A982464275"}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.5.0:p3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "629E039F-1C52-48DF-A952-11220A890AC2"}, {"criteria": "cpe:2.3:a:checkmk:checkmk:2.5.0:p4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CDC5BD88-F1D9-4ED4-81AA-3E6CD9AF16A8"}], "operator": "OR"}]}], "sourceIdentifier": "security@checkmk.com"}