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

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-28 · updated 2026-10-23
Weakness: CWE-862

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 products

goshs-labs goshs: before 2.1.1

References

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

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