CVE-2026-42503

gopls by default communicates via pipe. However, -port and -listen flags are supported as means of debugging. If -listen is given a value without an explicit host (e.g. :8080), or -port is used, gopls will listen on 0.0.0.0. As a result, users might inadvertently cause gopls to bind 0.0.0.0. This can allow a malicious party on the same network to execute code arbitrarily via gopls.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://go.dev/cl/774381	Patch
https://go.dev/issue/79211	Issue Tracking Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:golang:gopls:*:*:*:*:*:go:*:*

History

26 Oct 2026, 19:10

Type	Values Removed	Values Added
Summary		(es) gopls por defecto se comunica a través de una tubería. Sin embargo, las banderas -puerto y -listen son compatibles como medios de depuración. Si a -listen se le da un valor sin un host explícito (p. ej. :8080), o se usa -puerto, gopls escuchará en 0.0.0.0. Como resultado, los usuarios podrían inadvertidamente causar que gopls se enlace a 0.0.0.0. Esto puede permitir a una parte maliciosa en la misma red ejecutar código arbitrariamente a través de gopls.

18 Sep 2026, 15:16

Type	Values Removed	Values Added
First Time		Golang gopls Golang
CPE		cpe:2.3:a:golang:gopls::::::go::*
References	~~() https://go.dev/cl/774381 -~~	() https://go.dev/cl/774381 - Patch
References	~~() https://go.dev/issue/79211 -~~	() https://go.dev/issue/79211 - Issue Tracking, Vendor Advisory

Information

Published : 2026-05-06 17:16

Updated : 2026-10-26 19:10

NVD link : CVE-2026-42503

Mitre link : CVE-2026-42503

CVE.ORG link : CVE-2026-42503

JSON object : View

Products Affected

golang

gopls

CWE

CWE-1327

Binding to an Unrestricted IP Address

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