{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-59783", "assignerOrgId": "72de3e22-0555-4a0d-ae81-9249e0f0a1e8", "state": "PUBLISHED", "assignerShortName": "Zabbix", "dateReserved": "2026-07-07T08:30:49.859Z", "datePublished": "2026-10-05T10:28:09.917Z", "dateUpdated": "2026-10-05T11:50:08.690Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "72de3e22-0555-4a0d-ae81-9249e0f0a1e8", "shortName": "Zabbix", "dateUpdated": "2026-10-05T10:28:09.917Z"}, "title": "Server DoS via binary items", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-787", "description": "CWE-787: Out-of-bounds Write", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-52", "descriptions": [{"lang": "en", "value": "CAPEC-52: Embedding NULL Bytes"}]}], "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": "The Zabbix Server/Proxy has a vulnerability where binary items can crash the Server/Proxy on certain NULL byte input leading to potential loss of availability. This only affects deployments where MySQL/MariaDB database is used as the Zabbix database.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>The Zabbix Server/Proxy has a vulnerability where binary items can crash the Server/Proxy on certain NULL byte input leading to potential loss of availability. This only affects deployments where MySQL/MariaDB database is used as the Zabbix database.</p>"}]}], "references": [{"url": "https://support.zabbix.com/browse/ZBX-28194"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "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": "LOW", "baseScore": 2.3, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"}}], "configurations": [{"lang": "en", "value": "Attacker with trapper access sending malicious data for binary items.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Attacker with trapper access sending malicious data for binary items.</p>"}]}], "workarounds": [{"lang": "en", "value": "Disable item data collection for any Binary items with untrusted input.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Disable item data collection for any Binary items with untrusted input.</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 ylwango613 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": "2026-10-05T11:46:36.816142Z", "id": "CVE-2026-59783", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"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": "2026-10-05T11:50:08.690Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-59783", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-05T11:46:36.816142Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-05T11:47:02.917Z"}}], "cna": {"title": "Server DoS via binary items", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "reporter", "value": "Zabbix wants to thank ylwango613 for submitting this report on the HackerOne bug bounty platform."}], "impacts": [{"capecId": "CAPEC-52", "descriptions": [{"lang": "en", "value": "CAPEC-52: Embedding NULL Bytes"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 2.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "LOW", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "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-28194"}], "workarounds": [{"lang": "en", "value": "Disable item data collection for any Binary items with untrusted input.", "supportingMedia": [{"type": "text/html", "value": "<p>Disable item data collection for any Binary items with untrusted input.</p>", "base64": false}]}], "x_generator": {"engine": "Vulnogram 1.0.5"}, "descriptions": [{"lang": "en", "value": "The Zabbix Server/Proxy has a vulnerability where binary items can crash the Server/Proxy on certain NULL byte input leading to potential loss of availability. This only affects deployments where MySQL/MariaDB database is used as the Zabbix database.", "supportingMedia": [{"type": "text/html", "value": "<p>The Zabbix Server/Proxy has a vulnerability where binary items can crash the Server/Proxy on certain NULL byte input leading to potential loss of availability. This only affects deployments where MySQL/MariaDB database is used as the Zabbix database.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-787", "description": "CWE-787: Out-of-bounds Write"}]}], "configurations": [{"lang": "en", "value": "Attacker with trapper access sending malicious data for binary items.", "supportingMedia": [{"type": "text/html", "value": "<p>Attacker with trapper access sending malicious data for binary items.</p>", "base64": false}]}], "providerMetadata": {"orgId": "72de3e22-0555-4a0d-ae81-9249e0f0a1e8", "shortName": "Zabbix", "dateUpdated": "2026-10-05T10:28:09.917Z"}}}, "cveMetadata": {"cveId": "CVE-2026-59783", "state": "PUBLISHED", "dateUpdated": "2026-10-05T11:50:08.690Z", "dateReserved": "2026-07-07T08:30:49.859Z", "assignerOrgId": "72de3e22-0555-4a0d-ae81-9249e0f0a1e8", "datePublished": "2026-10-05T10:28:09.917Z", "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": "The Zabbix Server/Proxy has a vulnerability where binary items can crash the Server/Proxy on certain NULL byte input leading to potential loss of availability. This only affects deployments where MySQL/MariaDB database is used as the Zabbix database."}], "id": "CVE-2026-59783", "lastModified": "2026-10-06T15:27:05.657", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.3, "baseSeverity": "LOW", "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": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/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", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security@zabbix.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-59783", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-05T11:46:36.816142Z", "version": "2.0.3"}}]}, "published": "2026-10-05T11:16:59.513", "references": [{"source": "security@zabbix.com", "url": "https://support.zabbix.com/browse/ZBX-28194"}], "sourceIdentifier": "security@zabbix.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "security@zabbix.com", "type": "Secondary"}]}

{"bugzilla": {"description": "zabbix: Zabbix: Denial of service via null byte input in binary items", "id": "2545873", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2545873"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-464", "details": ["A flaw was found in Zabbix Server and Proxy. In deployments configured with a MySQL or MariaDB database backend, an authenticated remote attacker can cause a denial of service (DoS) by submitting binary items containing null bytes. This improper input handling causes the server or proxy process to crash, leading to a loss of monitoring service availability."], "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-2026-59783", "public_date": "2026-10-05T10:28:09Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-59783\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-59783\nhttps://support.zabbix.com/browse/ZBX-28194"], "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"}