{"cve":"CVE-2026-40884","nvd":{"published":"2026-04-21T20:17:02.107","modified":"2026-10-26T21:10:00.170","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-306"],"references":["https://github.com/patrickhener/goshs/security/advisories/GHSA-c29w-qq4m-2gcv","https://github.com/patrickhener/goshs/security/advisories/GHSA-c29w-qq4m-2gcv"],"products":["goshs:goshs"],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-40884","score":0.00478,"percentile":0.40992,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-c29w-qq4m-2gcv","url":"https://osv.dev/vulnerability/GHSA-c29w-qq4m-2gcv","summary":"goshs has an empty-username SFTP password authentication bypass","modified":"2026-06-25T19:56:36.329131132Z","packages":[{"ecosystem":"Go","name":"github.com/patrickhener/goshs","purl":"pkg:golang/github.com/patrickhener/goshs","ranges":["<=1.1.4"],"fixed":[]},{"ecosystem":"Go","name":"github.com/patrickhener/goshs/v2","purl":"pkg:golang/github.com/patrickhener/goshs/v2","ranges":["<2.0.0"],"fixed":["2.0.0"]}]},{"id":"GO-2026-5303","url":"https://osv.dev/vulnerability/GO-2026-5303","summary":"goshs has an empty-username SFTP password authentication bypass in github.com/patrickhener/goshs","modified":"2026-06-25T19:45:28.676424446Z","packages":[{"ecosystem":"Go","name":"github.com/patrickhener/goshs","purl":"pkg:golang/github.com/patrickhener/goshs","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/patrickhener/goshs/v2","purl":"pkg:golang/github.com/patrickhener/goshs/v2","ranges":["<2.0.0"],"fixed":["2.0.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}