What’s Vulnerable › Vulnerabilities

CVE-2026-110231: muCommander through 1.6.2 Path Traversal via Archive Extraction to FTP/SFTP

• Severity: medium (CVSS 4.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-13 · updated 2026-10-26
• Weakness: CWE-22

Description

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.

Affected products

• muCommander: through 1.6.2

References

• https://github.com/mucommander/mucommander/blob/3bc2118e13681a8018b84a06f1c5fea4a3f940f7/mucommander-commons-file/src/main/java/com/mucommander/commons/file/AbstractFile.java#L1021-L1023
• https://github.com/mucommander/mucommander/blob/3bc2118e13681a8018b84a06f1c5fea4a3f940f7/mucommander-core/src/main/java/com/mucommander/job/impl/UnpackJob.java#L233-L256
• https://github.com/mucommander/mucommander/blob/3bc2118e13681a8018b84a06f1c5fea4a3f940f7/mucommander-protocol-sftp/src/main/java/com/mucommander/commons/file/protocol/sftp/SFTPFile.java#L586-L622
• https://github.com/mucommander/mucommander/releases/tag/1.6.2-1
• https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/ryH-CfoiMl
• https://www.vulncheck.com/advisories/mucommander-through-1.6.2-path-traversal-via-archive-extraction-to-ftp-sftp
• https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/ryH-CfoiMl

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