Path Traversal in Mucommander
CVE-2026-110231
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/ryH-CfoiMl (third-party-advisory)
- github.com/mucommander/mucommander/blob/3bc2118e13681a8018b84a06f1c5fea4a3f940f… (technical-description)
- github.com/mucommander/mucommander/blob/3bc2118e13681a8018b84a06f1c5fea4a3f940f… (technical-description)
- github.com/mucommander/mucommander/blob/3bc2118e13681a8018b84a06f1c5fea4a3f940f… (technical-description)
- github.com/mucommander/mucommander/releases/tag/1.6.2-1 (release-notes)
- www.vulncheck.com/advisories/mucommander-through-1.6.2-path-traversal-via-archi… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-110231?
- CVE-2026-110231 is a medium-severity vulnerability in Mucommander, classified under Path Traversal. CVSS score: 4.7/10. Published 2026-10-13.
- How severe is CVE-2026-110231?
- Medium severity. CVSS v3 base score is 4.7 out of 10.