What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-21 · updated 2026-10-26
• Weakness: CWE-200

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.

Affected products

• patrickhener goshs: 2.0.0-beta4, 2.0.0-beta5

References

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

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