CVE-2026-63270 Affecting libreoffice package, versions <4:26.2.5.2-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-LIBREOFFICE-20511685
- published5 Oct 2026
- disclosed5 Oct 2026
Introduced: 5 Oct 2026
NewCVE-2026-63270 (opens in a new tab)How to fix?
Upgrade Debian:unstable libreoffice to version 4:26.2.5.2-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libreoffice package and not the libreoffice package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
URLs could be constructed which expanded environment variable or INI file values, so potentially sensitive information could be exfiltrated to a remote server on opening a document containing such links. The check added for CVE-2024-12426 did not cover every place a document can supply a URL. XForms instance data and the Calc csv and sql data providers still reached the expansion. In fixed versions these places refuse URLs with internal schemes when the URL comes from the document.