{"id":"CVE-2026-63277","title":"LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document","summary":"LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document. A document could name a Java database driver for such a link to be loaded from a remote location, so opening the document could run…","severity":"high","cvss":8.5,"cvssVector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","cwe":["CWE-829"],"vendor":"The Document Foundation","product":"LibreOffice","affected":["LibreOffice >= 26.2 < < 26.2.5"],"published":"2026-10-05","updated":"2026-10-06","sourceUpdated":"2026-10-06T15:03:59.427","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63277","references":[{"url":"https://www.libreoffice.org/about-us/security/advisories/cve-2026-63277","label":"security@documentfoundation.org"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63277.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-63277"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545885"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-63277"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63277"}],"tags":["nvd","cve.org","csaf","vex","red-hat","exploit-available"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-05T12:43:08.481980Z"},"cvssSource":"cna","scores":{"cna":8.5,"vendor":7.8},"ingestedAt":"2026-10-05T12:19:22.673Z","epss":0.0034,"epssPercentile":0.27334,"exploits":{"github":1,"githubRepos":["https://github.com/HORKimhab/CVE-2026-63277"],"checkedAt":"2026-10-27T19:06:41.944Z"},"exploitAvailable":true,"slug":"CVE-2026-63277","body":"## Overview\n\nLibreOffice Calc can link a cell range to an external data source, and the link is saved in the document. A document could name a Java database driver for such a link to be loaded from a remote location, so opening the document could run Java code from that location. In fixed versions an entry in a Java class path has to be a file URL.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-10-05 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63277.json)","depth":"midnight","depthScore":59,"depthScoreParts":{"impact":46.8,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":219375,"id":"CVE-2026-63277","ts":1791810621986,"field":"exploit_available","old":"false","new":"true"}]}