TI-2026-39544 Aliases CVE-2026-54732 GHSA-gmxc-r82q-347r

libreoffice-convert: path traversal / arbitrary file write

LOW 29CWE-22Published 2026-08-27 · Updated 2026-08-28

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · High · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

libreoffice-convert is a Node.js module for converting office documents to different formats. Prior to 1.8.2, index.js uses the caller-controlled options.fileName value in path.join(tempDir.name, fileName) without reducing it to a base name. A filename containing ../ can escape the temporary directory because path.basename() normalization is missing and write the supplied document buffer to an arbitrary path writable by the process, including an SSH authorized_keys file, a cron configuration, or a web root. This issue is fixed in version 1.8.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00416 36th percentileScored 2026-11-07

Fix Fixed libreoffice-convert (elwerene): 1.8.2libreoffice-convert (npm): 1.8.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
elwerene	libreoffice-convert	before 1.8.2	1.8.2	Patch available	CNA
—	libreoffice-convert (npm)	before 1.8.2	1.8.2	Patch available	GHSA-gmxc-r82q-347r

libreoffice-convert Vendorelwerene Affected before 1.8.2 Fixed in 1.8.2 Patch available CNA
libreoffice-convert (npm) Vendor— Affected before 1.8.2 Fixed in 1.8.2 Patch available GHSA-gmxc-r82q-347r

Remediation

Fix · CNA libreoffice-convert (elwerene) Fixed in 1.8.2
Fix · GHSA-gmxc-r82q-347r libreoffice-convert (npm) Fixed in 1.8.2 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-54732
2026-10-03 Alias added: GHSA-gmxc-r82q-347r

References

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences