CVE-2026-54719

Received Received - Intake

Unauthenticated ZIP Download in goshs

Publication date: 2026-07-28

Last updated on: 2026-07-28

Assigner: GitHub, Inc.

Description

goshs is a feature-rich single-binary file server for red teamers and developers. Prior to 2.1.1, the httpserver/updown.go bulkDownload handler for ?bulk&file= ZIP downloads did not call findEffectiveACL or applyCustomAuth, allowing unauthenticated reads of files protected only by .goshs folder ACLs and block lists. This issue is fixed in version 2.1.1. This vulnerability exists due to an incomplete fix for CVE-2026-40189.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-07-28

Last Modified

2026-07-28

Generated

2026-07-29

AI Q&A

2026-07-29

EPSS Evaluated

N/A

NVD

CVE-2026-54719

Affected Vendors & Products

Vendor	Product	Version / Range
goshs	goshs	2.1.1

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-862	The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
CWE-863	The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

Attack-Flow Graph

Executive Summary

This vulnerability affects goshs, a single-binary file server. It allows unauthenticated users to download files via ZIP downloads that should be protected by folder ACLs or block lists. The issue occurs because the bulkDownload handler does not enforce proper access controls.

Detection Guidance

Check if goshs version is below 2.1.1 by running: goshs -version. Test for unauthenticated ZIP downloads by accessing URLs like https://yourserver/?bulk&file=protectedfile.zip. Monitor logs for unauthorized access attempts to .goshs-protected files.

Impact Analysis

An attacker could exploit this to read sensitive files without authentication. This could lead to data leaks, unauthorized access to confidential information, or exposure of internal files. The impact is high as it affects files intended to be restricted.

Compliance Impact

This vulnerability could violate compliance requirements like GDPR or HIPAA by allowing unauthorized access to protected data. Organizations using affected versions may face legal penalties, data breach notifications, and reputational damage.

Mitigation Strategies

Upgrade goshs to version 2.1.1 or later immediately. Disable the bulk download feature if not needed. Review and restrict .goshs folder ACLs to prevent unauthorized access. Monitor network traffic for suspicious download requests.

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