CVE-2026-40885

goshs: Public collaborator feed leaks .goshs ACL credentials and enables unauthorized access

State: Published
Severity: 7.7 High
Published: Apr 21, 2026
Updated: Apr 21, 2026
Reserved: Apr 15, 2026

Description

goshs is a SimpleHTTPServer written in Go. From 2.0.0-beta.4 to 2.0.0-beta.5, goshs leaks file-based ACL credentials through its public collaborator feed when the server is deployed without global basic auth. Requests to .goshs-protected folders are logged before authorization is enforced, and the collaborator websocket broadcasts raw request headers, including Authorization. An unauthenticated observer can capture a victim's folder-specific basic-auth header and replay it to read, upload, overwrite, and delete files inside the protected subtree. This vulnerability is fixed in 2.0.0-beta.6.

Scores

CVSS	Score	Vector	Source
4.0	7.7 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

Product	Versions
goshspatrickhener	>= 2.0.0-beta.4, < 2.0.0-beta.6Affected

References

https://github.com/patrickhener/goshs/security/advisories/GHSA-7h3j-592v-jcrp

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