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CVE-2026-63270

Environment/ini-file leaks

CVSS 4.0 6.7 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-63270

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-63270

Published

LibreOffice

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "The Document Foundation",
                    "product": "LibreOffice",
                    "defaultStatus": "unknown",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "26.2",
                            "lessThan": "< 26.2.5",
                            "versionType": "26.2 series"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON