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CVE-2026-32282

Estado: AnalizadaMedia (6.4)—

On Linux, if the target of Root.Chmod is replaced with a symlink while the chmod operation is in progress, Chmod can operate on the target of the symlink, even when the target lies outside the root. The Linux fchmodat syscall silently ignores the AT_SYMLINK_NOFOLLOW flag, which Root.Chmod uses to avoid symlink traversal. Root.Chmod checks its target before acting and returns an error if the target is a symlink lying outside the root, so the impact is limited to cases where the target is replaced with a symlink between the check and operation.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Golang — GO

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-32282",
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  "metrics": {
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
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            {
              "automatable": "no"
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              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2026-04-13T17:47:42.666766Z"
        }
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    "cvssMetricV31": [
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        "source": "nvd@nist.gov",
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          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
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          "product": "internal/syscall/unix",
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  "published": "2026-04-08T02:16:03.467",
  "references": [
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      "url": "https://go.dev/cl/763761",
      "tags": [
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      "source": "security@golang.org"
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    {
      "url": "https://go.dev/issue/78293",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
        {
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          "value": "CWE-59"
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  ],
  "descriptions": [
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      "lang": "en",
      "value": "On Linux, if the target of Root.Chmod is replaced with a symlink while the chmod operation is in progress, Chmod can operate on the target of the symlink, even when the target lies outside the root. The Linux fchmodat syscall silently ignores the AT_SYMLINK_NOFOLLOW flag, which Root.Chmod uses to avoid symlink traversal. Root.Chmod checks its target before acting and returns an error if the target is a symlink lying outside the root, so the impact is limited to cases where the target is replaced with a symlink between the check and operation."
    },
    {
      "lang": "es",
      "value": "En Linux, si el objetivo de Root.Chmod es reemplazado por un enlace simbólico mientras la operación chmod está en curso, Chmod puede operar sobre el objetivo del enlace simbólico, incluso cuando el objetivo se encuentra fuera de la raíz. La llamada al sistema fchmodat de Linux ignora silenciosamente la bandera AT_SYMLINK_NOFOLLOW, que Root.Chmod utiliza para evitar el recorrido de enlaces simbólicos. Root.Chmod verifica su objetivo antes de actuar y devuelve un error si el objetivo es un enlace simbólico que se encuentra fuera de la raíz, por lo que el impacto está limitado a los casos en que el objetivo es reemplazado por un enlace simbólico entre la verificación y la operación."
    }
  ],
  "lastModified": "2026-07-25T10:10:00.167",
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