CVE-2026-40884 | patrickhener goshs up to 2.0.0-beta.5 SFTP Service missing authentication (GHSA-c29w-qq4m-2gcv)

VDB-358573 · CVE-2026-40884 · GHSA-C29W-QQ4M-2GCV PATRICKHENER GOSHS UP TO 2.0.0-BETA.5 SFTP SERVICE MISSING AUTHENTICATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 8.4 $0-$5k 1.27+ Summaryinfo A vulnerability was found in patrickhener goshs up to 2.0.0-beta.5. It has been classified as critical. The affected element is an unknown function of the component SFTP Service. This manipulation causes missing authentication. This vulnerability appears as CVE-2026-40884. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended. Detailsinfo A vulnerability has been found in patrickhener goshs up to 2.0.0-beta.5 and classified as critical. Affected by this vulnerability is an unknown code block of the component SFTP Service. The manipulation with an unknown input leads to a missing authentication vulnerability. The CWE definition for the vulnerability is CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is: 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. The advisory is shared at github.com. This vulnerability is known as CVE-2026-40884 since 04/15/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. Upgrading to version 2.0.0-beta.6 eliminates this vulnerability. Productinfo Vendor patrickhener Name goshs Version 2.0.0-beta.0 2.0.0-beta.1 2.0.0-beta.2 2.0.0-beta.3 2.0.0-beta.4 2.0.0-beta.5 Website Product: https://github.com/patrickhener/goshs/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 8.5 VulDB Meta Temp Score: 8.4 VulDB Base Score: 7.3 VulDB Temp Score: 7.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 9.8 CNA Vector (GitHub_M): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Missing authentication CWE: CWE-306 / CWE-287 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: goshs 2.0.0-beta.6 Timelineinfo 04/15/2026 CVE reserved 04/21/2026 +6 days Advisory disclosed 04/21/2026 +0 days VulDB entry created 04/21/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-c29w-qq4m-2gcv Status: Confirmed CVE: CVE-2026-40884 (🔒) GCVE (CVE): GCVE-0-2026-40884 GCVE (VulDB): GCVE-100-358573 Entryinfo Created: 04/21/2026 22:29 Changes: 04/21/2026 22:29 (65) Complete: 🔍 Cache ID: 99:58A:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸