{"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":"Caolán 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"}}]}}