CVE-2026-63267

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{"bugzilla": {"description": "libreoffice: libreoffice: Information disclosure via automatic external CSV link loading", "id": "2545881", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2545881"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-73", "details": ["A flaw was found in LibreOffice. When loading a spreadsheet, external comma-separated values (CSV) data links were automatically fetched without applying standard link update controls. A remote attacker could exploit this vulnerability by enticing a user to open a specially crafted document, causing the application to read local files into the sheet or initiate outbound network requests, resulting in information disclosure."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, configure LibreOffice Calc security options to disable or prompt for automatic updating of external links when opening documents from untrusted sources."}, "name": "CVE-2026-63267", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Fix deferred", "package_name": "libreoffice", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "libreoffice", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "libreoffice", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "libreoffice", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-10-05T11:17:22Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-63267\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-63267\nhttps://www.libreoffice.org/about-us/security/advisories/cve-2026-63267"], "statement": "LibreOffice Calc automatically fetches external CSV data links during document load without enforcing standard link update control policies. By convincing a user to open a specially crafted spreadsheet, an attacker can leverage these automatic external queries to read arbitrary local files into spreadsheet cells or trigger unauthorized outbound network requests. This allows a local or remote adversary to exfiltrate sensitive local data or conduct internal network probing under the security context of the user opening the file.", "threat_severity": "Moderate"}

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