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{"bugzilla": {"description": "libreoffice: libreoffice: Arbitrary code execution via remote Java database driver", "id": "2545885", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2545885"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-829", "details": ["A flaw was found in LibreOffice. When linking spreadsheet cell ranges to external data sources in Calc, a document can specify an external Java database driver. By convincing a user to open a specially crafted document, a remote attacker can force the application to download and execute untrusted Java code from a remote location, resulting in arbitrary code execution."], "mitigation": {"lang": "en:us", "value": "Restricting the LibreOffice Java class path settings to local file system schemes (file:// URLs) prevents the execution of untrusted code from remote network locations. Alternatively, disabling the Java Runtime Environment (JRE) in LibreOffice options (Tools -> Options -> LibreOffice -> Advanced) eliminates the attack vector."}, "name": "CVE-2026-63277", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Affected", "package_name": "libreoffice", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "libreoffice", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "libreoffice", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "libreoffice", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-10-05T11:17:20Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-63277\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-63277\nhttps://www.libreoffice.org/about-us/security/advisories/cve-2026-63277"], "statement": "Vulnerability in LibreOffice Calc allows execution of untrusted Java code via remote Java database driver paths in spreadsheet cell range links. When an attacker tricks a user into opening a specially crafted spreadsheet document, Calc downloads and executes arbitrary remote Java code under the security context of the logged-in user.", "threat_severity": "Important"}