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Root.Mkdir(All) can follow junctions out of the root on Windows in os

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

cve-program · CVE-2026-56857

Published

os

https://pkg.go.dev

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "Go standard library",
                    "product": "os",
                    "collectionURL": "https://pkg.go.dev",
                    "packageName": "os",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "1.26.9",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "1.27.0-0",
                            "lessThan": "1.27.2",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "platforms": [
                        "windows"
                    ],
                    "programRoutines": [
                        {
                            "name": "Root.Mkdir"
                        },
                        {
                            "name": "doInRoot"
                        },
                        {
                            "name": "rootMkdirAll"
                        },
                        {
                            "name": "Root.Chmod"
                        },
                        {
                            "name": "Root.Chown"
                        },
                        {
                            "name": "Root.Chtimes"
                        },
                        {
                            "name": "Root.Lchown"
                        },
                        {
                            "name": "Root.Link"
                        },
                        {
                            "name": "Root.MkdirAll"
                        },
                        {
                            "name": "Root.Remove"
                        },
                        {
                            "name": "Root.RemoveAll"
                        },
                        {
                            "name": "Root.Rename"
                        },
                        {
                            "name": "Root.Symlink"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

internal/syscall/windows

https://pkg.go.dev

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "Go standard library",
                    "product": "internal/syscall/windows",
                    "collectionURL": "https://pkg.go.dev",
                    "packageName": "internal/syscall/windows",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "1.26.9",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "1.27.0-0",
                            "lessThan": "1.27.2",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "platforms": [
                        "windows"
                    ],
                    "programRoutines": [
                        {
                            "name": "Mkdirat"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON

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Sources read 9 Nov 11:51 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current