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CVE-2026-66063— goshs has a Path Traversal issue

Quick assessment

Affected
goshs-labs goshs
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

goshs-labs goshs是goshs-labs组织的一个Web服务器软件。 goshs-labs goshs 2.1.5之前版本存在路径遍历漏洞，该漏洞源于httpserver/updown.go multipart upload handler对文件名分割时未拒绝..，可能导致未认证上传创建服务器目录外的文件。

CVSS 6.5 · Medium EPSS 0.34% · P25

Affected Version Matrix 1

VendorProduct Version RangeStatus
goshs-labs goshs < 2.1.5 affected
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I. Basic Information for CVE-2026-66063

Vulnerability Information
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Vulnerability Title
goshs has a Path Traversal issue
Source: CVE Program / CVE List V5
Vulnerability Description
goshs is a feature-rich single-binary file server for red teamers and developers. Prior to 2.1.5, the httpserver/updown.go multipart upload handler split part.FileName() on / but did not reject .., allowing an unauthenticated upload with filename .. to create a file outside the served tree. This issue is fixed in version 2.1.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
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
goshs-labs goshs 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
goshs-labs goshs是goshs-labs组织的一个Web服务器软件。 goshs-labs goshs 2.1.5之前版本存在路径遍历漏洞，该漏洞源于httpserver/updown.go multipart upload handler对文件名分割时未拒绝..，可能导致未认证上传创建服务器目录外的文件。
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
goshs-labs goshs < 2.1.5 -

II. Public POCs for CVE-2026-66063

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III. Intelligence Information for CVE-2026-66063

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Patches & Fixes for CVE-2026-66063 (1)

Vendor Advisories for CVE-2026-66063 (1)

Same Patch Batch · goshs-labs · 2026-07-28 · 5 CVEs total

CVE-2026-62325 9.1 CRITICAL goshs SFTP authentication bypass via empty password (incomplete fix of CVE-2026-40884)
CVE-2026-64863 9.1 CRITICAL goshs --no-delete WebDAV MOVE bypass allows file deletion/overwrite
CVE-2026-54719 7.5 HIGH goshs: File-based .goshs ACL authorization bypass via the ?bulk zip-download route (unauth
CVE-2026-66064 5.3 MEDIUM goshs has ACL Bypass & Path Traversal

IV. Related Vulnerabilities

Same product: goshs
Same vendor: goshs-labs
Same weakness: CWE-22

V. Comments for CVE-2026-66063

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