{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-59786", "assignerOrgId": "72de3e22-0555-4a0d-ae81-9249e0f0a1e8", "state": "PUBLISHED", "assignerShortName": "Zabbix", "dateReserved": "2026-07-07T08:30:49.860Z", "datePublished": "2026-10-05T10:29:01.810Z", "dateUpdated": "2026-10-05T11:25:27.518Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "72de3e22-0555-4a0d-ae81-9249e0f0a1e8", "shortName": "Zabbix", "dateUpdated": "2026-10-05T10:29:01.810Z"}, "title": "Active agent heartbeat missing TLS check", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-940", "description": "CWE-940: Improper Verification of Source of a Communication Channel", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-194", "descriptions": [{"lang": "en", "value": "CAPEC-194: Fake the Source of Data"}]}], "affected": [{"vendor": "Zabbix", "product": "Zabbix", "repo": "https://git.zabbix.com/", "modules": ["Server", "Proxy"], "versions": [{"status": "affected", "version": "7.0.0", "lessThanOrEqual": "7.0.28", "changes": [{"at": "7.0.29", "status": "unaffected"}], "versionType": "git"}, {"status": "affected", "version": "7.4.0", "lessThanOrEqual": "7.4.12", "changes": [{"at": "7.4.13", "status": "unaffected"}], "versionType": "git"}], "defaultStatus": "unknown"}], "descriptions": [{"lang": "en", "value": "Zabbix Server and Proxy accept the active agent heartbeat message regardless of the configured PSK or certificate authentication. This means someone with access to the Zabbix trapper port can report an arbitrary host using an active agent as available, resulting in a loss of integrity.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Zabbix Server and Proxy accept the active agent heartbeat message regardless of the configured PSK or certificate authentication. This means someone with access to the Zabbix trapper port can report an arbitrary host using an active agent as available, resulting in a loss of integrity.</p>"}]}], "references": [{"url": "https://support.zabbix.com/browse/ZBX-28196"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 6.9, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"}}], "configurations": [{"lang": "en", "value": "Attacker with network access to the trapper port sending crafted heartbeat packets.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Attacker with network access to the trapper port sending crafted heartbeat packets.</p>"}]}], "solutions": [{"lang": "en", "value": "Update the affected components to their respective fixed versions.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Update the affected components to their respective fixed versions.</p>"}]}], "credits": [{"lang": "en", "value": "Zabbix wants to thank Aditya Bisht for submitting this report on the HackerOne bug bounty platform.", "type": "reporter"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-05T11:25:11.807987Z", "id": "CVE-2026-59786", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-05T11:25:27.518Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-59786", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-05T11:25:11.807987Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-05T11:25:18.118Z"}}], "cna": {"title": "Active agent heartbeat missing TLS check", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "reporter", "value": "Zabbix wants to thank Aditya Bisht for submitting this report on the HackerOne bug bounty platform."}], "impacts": [{"capecId": "CAPEC-194", "descriptions": [{"lang": "en", "value": "CAPEC-194: Fake the Source of Data"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.9, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"repo": "https://git.zabbix.com/", "vendor": "Zabbix", "modules": ["Server", "Proxy"], "product": "Zabbix", "versions": [{"status": "affected", "changes": [{"at": "7.0.29", "status": "unaffected"}], "version": "7.0.0", "versionType": "git", "lessThanOrEqual": "7.0.28"}, {"status": "affected", "changes": [{"at": "7.4.13", "status": "unaffected"}], "version": "7.4.0", "versionType": "git", "lessThanOrEqual": "7.4.12"}], "defaultStatus": "unknown"}], "solutions": [{"lang": "en", "value": "Update the affected components to their respective fixed versions.", "supportingMedia": [{"type": "text/html", "value": "<p>Update the affected components to their respective fixed versions.</p>", "base64": false}]}], "references": [{"url": "https://support.zabbix.com/browse/ZBX-28196"}], "x_generator": {"engine": "Vulnogram 1.0.5"}, "descriptions": [{"lang": "en", "value": "Zabbix Server and Proxy accept the active agent heartbeat message regardless of the configured PSK or certificate authentication. This means someone with access to the Zabbix trapper port can report an arbitrary host using an active agent as available, resulting in a loss of integrity.", "supportingMedia": [{"type": "text/html", "value": "<p>Zabbix Server and Proxy accept the active agent heartbeat message regardless of the configured PSK or certificate authentication. This means someone with access to the Zabbix trapper port can report an arbitrary host using an active agent as available, resulting in a loss of integrity.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-940", "description": "CWE-940: Improper Verification of Source of a Communication Channel"}]}], "configurations": [{"lang": "en", "value": "Attacker with network access to the trapper port sending crafted heartbeat packets.", "supportingMedia": [{"type": "text/html", "value": "<p>Attacker with network access to the trapper port sending crafted heartbeat packets.</p>", "base64": false}]}], "providerMetadata": {"orgId": "72de3e22-0555-4a0d-ae81-9249e0f0a1e8", "shortName": "Zabbix", "dateUpdated": "2026-10-05T10:29:01.810Z"}}}, "cveMetadata": {"cveId": "CVE-2026-59786", "state": "PUBLISHED", "dateUpdated": "2026-10-05T11:25:27.518Z", "dateReserved": "2026-07-07T08:30:49.860Z", "assignerOrgId": "72de3e22-0555-4a0d-ae81-9249e0f0a1e8", "datePublished": "2026-10-05T10:29:01.810Z", "assignerShortName": "Zabbix"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unknown", "modules": ["Server", "Proxy"], "product": "Zabbix", "repo": "https://git.zabbix.com/", "vendor": "Zabbix", "versions": [{"changes": [{"at": "7.0.29", "status": "unaffected"}], "lessThanOrEqual": "7.0.28", "status": "affected", "version": "7.0.0", "versionType": "git"}, {"changes": [{"at": "7.4.13", "status": "unaffected"}], "lessThanOrEqual": "7.4.12", "status": "affected", "version": "7.4.0", "versionType": "git"}]}], "source": "security@zabbix.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Zabbix Server and Proxy accept the active agent heartbeat message regardless of the configured PSK or certificate authentication. This means someone with access to the Zabbix trapper port can report an arbitrary host using an active agent as available, resulting in a loss of integrity."}], "id": "CVE-2026-59786", "lastModified": "2026-10-06T15:27:05.657", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security@zabbix.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-59786", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-05T11:25:11.807987Z", "version": "2.0.3"}}]}, "published": "2026-10-05T11:16:59.807", "references": [{"source": "security@zabbix.com", "url": "https://support.zabbix.com/browse/ZBX-28196"}], "sourceIdentifier": "security@zabbix.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-940"}], "source": "security@zabbix.com", "type": "Secondary"}]}

{"bugzilla": {"description": "zabbix: zabbix: Host status spoofing via unauthenticated active agent heartbeats", "id": "2545874", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2545874"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "status": "draft"}, "cwe": "CWE-306", "details": ["A flaw was found in Zabbix. A remote, unauthenticated attacker with network access to the trapper port can spoof host availability, compromising the integrity of monitoring data. The Zabbix server and proxy accept active agent heartbeat messages without verifying configured pre-shared key (PSK) or certificate-based authentication, allowing an attacker to falsely report arbitrary hosts as available."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-59786", "public_date": "2026-10-05T10:29:01Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-59786\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-59786\nhttps://support.zabbix.com/browse/ZBX-28196"], "statement": "Red Hat does not ship Zabbix in any supported product. The community EPEL zabbix7.0 package is affected by this flaw and a community tracker has been filed.", "threat_severity": "Moderate"}