Accidental binding to INADDR_ANY might lead to RCE in golang.org/x/tools/gopls

8.8 / 10

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

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.

AI Analysis

Accidental binding to INADDR_ANY might lead to Remote Code Execution (RCE) in gopls

Basic Information

ID CVE-2026-42503

Source Go

Published May 6, 2026 at 16:20

Modified May 6, 2026 at 17:08

Affected Product

Vendor golang.org/x/tools

Product golang.org/x/tools/gopls

Version 0.0.0

Affected Versions golang.org/x/tools golang.org/x/tools/gopls 0.0.0

CWE Classification

CWE-1327

AI Assessment

AI Score 8.8 / 10

AI Severity High

Vendor The Go Authors

Product gopls

Version 0.0.0

References

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    "published": "2026-05-06T16:20:01.428Z",
    "modified": "2026-05-06T17:08:32.834Z",
    "type": "cve",
    "title": "Accidental binding to INADDR_ANY might lead to RCE in golang.org/x/tools/gopls",
    "source": "Go",
    "references": "https://go.dev/issue/79211\nhttps://go.dev/cl/774381",
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Accidental binding to INADDR_ANY might lead to RCE in golang.org/x/tools/gopls_CVE-2026-42503