# CVE-2026-63270: libreoffice: URLs could be constructed which expanded environment variable or INI file values, so potentially sensitive informatio...

CVE-2026-63270 is fixed in libreoffice on 1 platform, first by DEBIAN-CVE-2026-63270, released October 5, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-63270
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0012
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 5, 2026

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libreoffice Debian 13.5 (trixie) | 4:25.2.3-2+deb13u8 | [DEBIAN-CVE-2026-63270](https://patchblox.com/security/data/fix/linux/debian-cve-2026-63270.md) | Oct 5, 2026 |
| Linux | libreoffice Debian 14 | 4:26.2.5.2-1 | [DEBIAN-CVE-2026-63270](https://patchblox.com/security/data/fix/linux/debian-cve-2026-63270.md) | Oct 5, 2026 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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