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Root escape via symlink plus trailing slash in os

cve-program · CVE-2026-39822

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": "1.25.12",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "1.26.0-0",
                            "lessThan": "1.26.5",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "1.27.0-0",
                            "lessThan": "1.27.0-rc.2",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "programRoutines": [
                        {
                            "name": "rootOpenFileNolog"
                        },
                        {
                            "name": "openRootInRoot"
                        },
                        {
                            "name": "OpenInRoot"
                        },
                        {
                            "name": "Root.Create"
                        },
                        {
                            "name": "Root.Open"
                        },
                        {
                            "name": "Root.OpenFile"
                        },
                        {
                            "name": "Root.OpenRoot"
                        },
                        {
                            "name": "Root.ReadFile"
                        },
                        {
                            "name": "Root.WriteFile"
                        },
                        {
                            "name": "rootFS.Open"
                        },
                        {
                            "name": "rootFS.ReadDir"
                        },
                        {
                            "name": "rootFS.ReadFile"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

nvd · CVE-2026-39822

Published

No affected-package array is stated in this source revision. Check its state and earlier observations; this does not establish that every package is unaffected.

osv · GO-2026-4970

Published

stdlib

Go

SEMVER · introduced 0 → fixed 1.25.12 → introduced 1.26.0-0 → fixed 1.26.5 → introduced 1.27.0-0 → fixed 1.27.0-rc.2

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 27 Oct 13:21 UTC · 272 of 272 readable · 270 fully read · documentation 466/469 current