{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63266", "assignerOrgId": "4fe7d05b-1353-44cc-8b7a-1e416936dff2", "state": "PUBLISHED", "assignerShortName": "Document Fdn.", "dateReserved": "2026-07-16T08:17:05.511Z", "datePublished": "2026-10-05T11:17:21.513Z", "dateUpdated": "2026-10-05T12:42:53.493Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "4fe7d05b-1353-44cc-8b7a-1e416936dff2", "shortName": "Document Fdn.", "dateUpdated": "2026-10-05T11:17:21.513Z"}, "title": "Arbitrary file write via calcext:data-mappings, sql provider and Firebird backup functionality", "datePublic": "2026-10-05T23:59:00.000Z", "descriptions": [{"lang": "en", "value": "LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document. Through such a link a document could open an embedded Firebird database that wrote a file to any location the user could write to. In fixed versions an embedded Firebird database can open or create files only inside its own private directory.", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document.</p><p>Through such a link a document could open an embedded Firebird database that wrote a file to any location the user could write to.</p><p>In fixed versions an embedded Firebird database can open or create files only inside its own private directory.</p>"}]}], "affected": [{"vendor": "The Document Foundation", "product": "LibreOffice", "defaultStatus": "unknown", "versions": [{"status": "affected", "version": "26.2", "lessThan": "< 26.2.5", "versionType": "26.2 series"}]}], "credits": [{"lang": "en", "type": "reporter", "value": "Thomas Rinsma and Edoardo Geraci from Codean Labs"}, {"lang": "en", "type": "remediation developer", "value": "Caol\u00e1n McNamara of Collabora Productivity"}], "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-22", "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-597", "descriptions": [{"lang": "en", "value": "CAPEC-597 Absolute Path Traversal"}]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "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": 6.8, "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"}}], "references": [{"url": "https://www.libreoffice.org/about-us/security/advisories/cve-2026-63266"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-05T12:42:40.333248Z", "id": "CVE-2026-63266", "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": "2026-10-05T12:42:53.493Z"}}]}}

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{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "LibreOffice", "vendor": "The Document Foundation", "versions": [{"lessThan": "< 26.2.5", "status": "affected", "version": "26.2", "versionType": "26.2 series"}]}], "source": "security@documentfoundation.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document. Through such a link a document could open an embedded Firebird database that wrote a file to any location the user could write to. In fixed versions an embedded Firebird database can open or create files only inside its own private directory."}], "id": "CVE-2026-63266", "lastModified": "2026-10-05T12:17:10.577", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.8, "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": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/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": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security@documentfoundation.org", "type": "Secondary"}]}, "published": "2026-10-05T12:17:10.577", "references": [{"source": "security@documentfoundation.org", "url": "https://www.libreoffice.org/about-us/security/advisories/cve-2026-63266"}], "sourceIdentifier": "security@documentfoundation.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "security@documentfoundation.org", "type": "Secondary"}]}

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