---
id: CVE-2026-110231
title: >-
  muCommander through 1.6.2 contains a path traversal vulnerability in UnpackJob
  that allows attackers to write files outside the destination folder by
  bypassing its ZipSlip check with unnormalized remote paths
summary: >-
  muCommander through 1.6.2 contains a path traversal vulnerability in UnpackJob
  that allows attackers to write files outside the destination folder by
  bypassing its ZipSlip check with unnormalized remote paths. Attackers can
  craft TAR or …
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N'
cwe:
  - CWE-22
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T19:30:29.797'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-110231'
references:
  - url: >-
      https://github.com/mucommander/mucommander/blob/3bc2118e13681a8018b84a06f1c5fea4a3f940f7/mucommander-commons-file/src/main/java/com/mucommander/commons/file/AbstractFile.java#L1021-L1023
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/mucommander/mucommander/blob/3bc2118e13681a8018b84a06f1c5fea4a3f940f7/mucommander-core/src/main/java/com/mucommander/job/impl/UnpackJob.java#L233-L256
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/mucommander/mucommander/blob/3bc2118e13681a8018b84a06f1c5fea4a3f940f7/mucommander-protocol-sftp/src/main/java/com/mucommander/commons/file/protocol/sftp/SFTPFile.java#L586-L622
    label: disclosure@vulncheck.com
  - url: 'https://github.com/mucommander/mucommander/releases/tag/1.6.2-1'
    label: disclosure@vulncheck.com
  - url: 'https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/ryH-CfoiMl'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/mucommander-through-1.6.2-path-traversal-via-archive-extraction-to-ftp-sftp
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-13T19:43:28.941Z'
---

## Overview

muCommander through 1.6.2 contains a path traversal vulnerability in UnpackJob that allows attackers to write files outside the destination folder by bypassing its ZipSlip check with unnormalized remote paths. Attackers can craft TAR or ZIP entries like ../../.ssh/authorized_keys that, when extracted to FTP or SFTP folders, create or overwrite files writable by the user's remote account.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.