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CVE-2026-72903— Tabby: Windows SFTP path traversal allows a malicious server to write files outside the selected download directory

Quick assessment

Affected
Eugeny tabby
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Eugene Tabby是Eugene个人开发者的一款嵌入式Web服务器中间件。 Eugene Tabby 1.0.235之前版本存在路径遍历漏洞，该漏洞源于恶意SFTP服务器返回包含反斜杠的遍历文件名，可能导致路径遍历，允许在所选下载目录或临时编辑目录之外创建或覆盖文件。

CVSS 8.1 · High EPSS 0.31% · P24

Affected Version Matrix 1

VendorProduct Version RangeStatus
Eugeny tabby < 1.0.235 affected
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I. Basic Information for CVE-2026-72903

Vulnerability Information
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Vulnerability Title
Tabby: Windows SFTP path traversal allows a malicious server to write files outside the selected download directory
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Eugene Tabby 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Eugene Tabby是Eugene个人开发者的一款嵌入式Web服务器中间件。 Eugene Tabby 1.0.235之前版本存在路径遍历漏洞，该漏洞源于恶意SFTP服务器返回包含反斜杠的遍历文件名，可能导致路径遍历，允许在所选下载目录或临时编辑目录之外创建或覆盖文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Eugeny tabby < 1.0.235 -

II. Public POCs for CVE-2026-72903

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 12884 chars
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III. Intelligence Information for CVE-2026-72903

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Patches & Fixes for CVE-2026-72903 (1)

Vendor Pages for CVE-2026-72903 (1)

Other References for CVE-2026-72903 (1)

IV. Related Vulnerabilities

Same product: tabby
Same vendor: Eugeny
Same weakness: CWE-22

V. Comments for CVE-2026-72903

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