Vulnerability · Published Jul 28, 2026 · Assigned by GitHub_M

CVE-2026-54719goshs: File-based .goshs ACL authorization bypass via the ?bulk zip-download route (unauthenticated read; residual of CVE-2026-40189)

High 7.5

In plain English

A high-severity missing authorization in goshs from goshs-labs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.4%top 71.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/patrickhener/goshs	no fix listed	GHSA-rmxw-pq4x-3fvh
Go	github.com/patrickhener/goshs	no fix listed	GO-2026-6133
Go	github.com/patrickhener/goshs/v2	2.1.1	GHSA-rmxw-pq4x-3fvh
Go	goshs.de/goshs	no fix listed	GO-2026-6133
Go	goshs.de/goshs	no fix listed	GHSA-rmxw-pq4x-3fvh
Go	goshs.de/goshs/v2	2.1.1	GHSA-rmxw-pq4x-3fvh
Go	goshs.de/goshs/v2	2.1.1	GO-2026-6133

Affected products (as reported)

Vendor	Product	Versions
goshs-labs	goshs	< 2.1.1

Weakness: CWE-862, CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

https://github.com/goshs-labs/goshs/security/advisories/GHSA-rmxw-pq4x-3fvh x_refsource_CONFIRM
https://github.com/goshs-labs/goshs/commit/7cf911a26ace737e1a55b7dc073e307a25f7fd1d x_refsource_MISC
https://github.com/goshs-labs/goshs/releases/tag/v2.1.1 x_refsource_MISC