libreoffice-convert vulnerable to path traversal / arbitrary file write
Impact
options.fileName is used to build a filesystem path (path.join(tempDir.name, fileName)) and the caller-supplied document buffer is written there, but fileName is never reduced to a base name. A fileName containing "../" escapes the temporary directory, so a caller can write arbitrary content to an arbitrary path the process can write to (e.g. ~/.ssh/authorized_keys, an /etc/cron.d entry, or a web root).
Patches
Version 1.8.2 uses path.basename on filename to make sure the temp directory can not be escaped.
Workarounds
Make sure you supply the filename yourself and don't have it user supplied or use path.basename on filename before using it in libreoffice-convert.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | libreoffice-convert | < 1.8.2 | 1.8.2 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N- Weakness (CWE)
CWE-22- Platform
- npm
- Package
libreoffice-convert- Disclosed
- 27.08.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-gmxc-r82q-347r - CC BY 4.0
Vulnerability history: libreoffice-convert
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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