Is CVE-2026-40884 actively exploited?

No active exploitation of CVE-2026-40884 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-40884 be exploited remotely?

Yes. CVE-2026-40884 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-40884?

CVE-2026-40884 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2026-40884

CRITICAL

CVE-2026-40884

CWE-306Published: April 21, 2026· Updated: Apr 27, 2026

9.8

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:17.4th

Official 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.

NVD Source

Technical Analysis

CVE-2026-40884 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.