Vulnerability · Published Aug 27, 2026 · Assigned by GitHub_M

CVE-2026-54732libreoffice-convert: path traversal / arbitrary file write

Medium 6.5

In plain English

A medium-severity path traversal in libreoffice-convert from elwerene. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.4%top 63.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	libreoffice-convert	1.8.2	GHSA-gmxc-r82q-347r

Affected products (as reported)

Vendor	Product	Versions
elwerene	libreoffice-convert	< 1.8.2

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

References

https://github.com/elwerene/libreoffice-convert/security/advisories/GHSA-gmxc-r82q-347r x_refsource_CONFIRM
https://github.com/elwerene/libreoffice-convert/commit/b78f17df9b9183bd503fc4635fc8b3df6705047b x_refsource_MISC