CVE•Published 2026-04-21•Modified 2026-04-27•1 article on news•6 live references•NVD data
CVE-2026-40884Goshs · Goshs
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
17
Exploit Prediction Scoring System · top 83% of all CVEs
Weaknesses (CWE)
Description
goshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.6, goshs contains an SFTP authentication bypass when the documented empty-username basic-auth syntax is used. If the server is started with -b ':pass' together with -sftp, goshs accepts that configuration but does not install any SFTP password handler. As a result, an unauthenticated network attacker can connect to the SFTP service and access files without a password. This vulnerability is fixed in 2.0.0-beta.6.
Timeline
Published 2026-04-21
Modified 2026-04-27
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-40884Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Goshs Goshs"All exposed Goshs Goshs instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Goshs"HTTP body or banner mentions "Goshs" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-40884Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-40884Censys host search filtered to this CVE id.
grep.app
CVE-2026-40884Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-40884GitHub code search for direct mentions.
Google dork
"CVE-2026-40884" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.