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Root escape via symlink plus trailing slash 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-2026-39822

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"
                }
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Sources read 27 Oct 15:46 UTC · 271 of 272 readable · 269 fully read · documentation 469/469 current