CVE-2026-54732: Libreoffice convert Path Traversal Vulnerability

MODERATE
Advisory Identifier: GHSA-gmxc-r82q-347r
Share
CVSS 6.5
CWE-22
Published
Advisory Summary

CVE-2026-54732 is a MODERATE (CVSS 6.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Libreoffice convert libraries in the npm ecosystem. The issue involves libreoffice-convert vulnerable to path traversal / arbitrary file write. Remediation is available by upgrading affected packages to version 1.8.2.

CVE-2026-54732 at a Glance

CVE Identifier CVE-2026-54732
GHSA Identifier GHSA-gmxc-r82q-347r
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Libreoffice convert
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2026-54732

To remediate this vulnerability, upgrade all affected Libreoffice convert dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

libreoffice-convert fixed: 1.8.2 
npm install libreoffice-convert@1.8.2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls libreoffice-convert

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-54732, inspect your project dependencies using npm:

npm ls libreoffice-convert

Analyze the terminal output to locate any version of Libreoffice convert in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.8.2), your application is affected.

Note: The npm ls libreoffice-convert command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Libreoffice convert, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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`.

CVE-2026-54732 Affected Libreoffice convert Versions

1 component(s)
Fixed Versions:
1.8.2
Product / Package Ecosystem Affected Versions Fixed Version
libreoffice-convert
npm/libreoffice-convert
npm
< 1.8.2
1.8.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/elwerene/libreoffice-convert/security/advisories/GHSA-gmxc-r82q-347r
Security Fix Commit FIX COMMIT
https://github.com/elwerene/libreoffice-convert/commit/b78f17df9b9183bd503fc4635fc8b3df6705047b
Libreoffice convert Source Repository REPOSITORY
https://github.com/elwerene/libreoffice-convert

Frequently Asked Questions

What is CVE-2026-54732?
CVE-2026-54732 is a security vulnerability in Libreoffice convert involving libreoffice-convert vulnerable to path traversal / arbitrary file write under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Libreoffice convert versions are affected?
Affected versions include releases prior to 1.8.2 across affected packages: libreoffice-convert.
What version fixes CVE-2026-54732?
Upgrading to 1.8.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is libreoffice-convert affected?
Yes, libreoffice-convert is affected in releases prior to 1.8.2. Upgrade your dependency to 1.8.2 or later.
What is the CVSS score of CVE-2026-54732?
CVE-2026-54732 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2026-54732?
CVE-2026-54732 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check npm dependencies for CVE-2026-54732?
Run the dependency tree command: 'npm ls libreoffice-convert'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-gmxc-r82q-347r",
  "modified" : "2026-08-27T17:23:16Z",
  "published" : "2026-08-27T17:23:16Z",
  "aliases" : [ "CVE-2026-54732" ],
  "summary" : "libreoffice-convert vulnerable to path traversal / arbitrary file write",
  "details" : "### Impact\noptions.fileName is used to build a filesystem path\n(path.join(tempDir.name, fileName)) and the caller-supplied document buffer is\nwritten there, but fileName is never reduced to a base name. A fileName containing\n\"../\" escapes the temporary directory, so a caller can write arbitrary content to an\narbitrary path the process can write to (e.g. ~/.ssh/authorized_keys, an /etc/cron.d\nentry, or a web root).\n\n### Patches\nVersion 1.8.2 uses `path.basename` on `filename` to make sure the temp directory can not be escaped.\n\n### Workarounds\nMake 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`.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "libreoffice-convert"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.8.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/elwerene/libreoffice-convert/security/advisories/GHSA-gmxc-r82q-347r"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/elwerene/libreoffice-convert/commit/b78f17df9b9183bd503fc4635fc8b3df6705047b"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/elwerene/libreoffice-convert"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-27T17:23:16Z",
    "nvd_published_at" : null
  }
}