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CVE-2025-22873 Improper access to parent directory of root in os

🗓️ 04 Feb 2026 23:05:24Reported by GoType 
cvelist
 cvelist
🔗 www.cve.org👁 16 Views

CVE-2025-22873 allows opening root's parent via a filename ending in '../', exposing the parent.

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Affected
Refs
[
  {
    "vendor": "Go standard library",
    "product": "os",
    "collectionURL": "https://pkg.go.dev",
    "packageName": "os",
    "versions": [
      {
        "version": "0",
        "lessThan": "1.23.9",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "1.24.0-0",
        "lessThan": "1.24.3",
        "status": "affected",
        "versionType": "semver"
      }
    ],
    "programRoutines": [
      {
        "name": "splitPathInRoot"
      },
      {
        "name": "checkPathEscapesInternal"
      },
      {
        "name": "doInRoot"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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