Eugeny Tabby up to 1.0.234 SFTP sftp.ts SFTPSession.readdir Name path traversal

Summaryinfo

A vulnerability categorized as critical has been discovered in Eugeny Tabby up to 1.0.234. This affects the function SFTPSession.readdir of the file tabby-ssh/src/session/sftp.ts of the component SFTP Handler. Executing a manipulation of the argument Name can lead to path traversal. The identification of this vulnerability is CVE-2026-72903. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Eugeny Tabby up to 1.0.234. It has been declared as critical. This vulnerability affects the function SFTPSession.readdir of the file tabby-ssh/src/session/sftp.ts of the component SFTP Handler. The manipulation of the argument name with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-23. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Tabby (formerly Terminus) is a highly configurable terminal emulator. Prior to 1.0.235, a malicious SFTP server can return a backslash traversal filename through entry.name. In tabby-ssh/src/session/sftp.ts, SFTPSession.readdir() and _makeFile() use POSIX path processing that preserves the backslashes as ordinary filename characters. In tabby-ssh/src/components/sftpPanel.component.ts, downloadFolderRecursive() propagates item.name into the local relative path. In tabby-electron/src/services/platform.service.ts, ElectronDirectoryDownload.createFile() passes that path to Windows-native path.join(), and in tabby-electron/src/sftpContextMenu.ts, EditSFTPContextMenu.edit() passes item.name to path.join() for the temporary edit path. Windows interprets the preserved backslashes and parent-directory components as traversal, allowing attacker-controlled content to be created or overwritten outside the selected download directory or temporary edit directory. This issue is fixed in version 1.0.235.

The advisory is available at github.com. This vulnerability was named CVE-2026-72903 since 08/10/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading to version 1.0.235 eliminates this vulnerability.

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Productinfo

Vendor

• Eugeny

Name

• Tabby

Version

• 1.0.234

Website

• Product: https://github.com/Eugeny/tabby/

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