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HIGHCVE-2026-40885Published Modified CNA GitHub_M

CVE-2026-40885: goshs: Public collaborator feed leaks .goshs ACL credentials and enables unauthorized access

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.

Metrics

CVSS v4.0
7.7
Severity
HIGH
Fixed in
Affected Products
1
Affected packages
  • patrickhener / goshs
    >= 2.0.0-beta.4, < 2.0.0-beta.6
CVSS Vector
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
CVE-2026-40885: goshs: Public collaborator feed leaks .goshs ACL credentials and enables unauthorized access | HarborGuard CVE