FKIE_CVE-2026-11526

Vulnerability from fkie_nvd - Published: 2026-06-14 12:16 - Updated: 2026-07-23 10:10
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
GD versions before 2.86 for Perl allow OS command injection and file overwrite via a 2-arg open() of filename arguments in _make_filehandle. GD::Image::_make_filehandle opens a filename argument with Perl's 2-arg open(), so a filename that begins or ends with a pipe ("| cmd", "cmd |") or begins with a redirect ("> path", ">> path") is run as a command or redirect rather than opened as a file. _make_filehandle is the single open path behind every filename-accepting constructor (new, newFromPng, newFromJpeg, and the rest); the in-memory *Data variants do not open a path and are unaffected. Any caller that forwards untrusted input to one of these constructors as a pathname can run an arbitrary command or truncate a file under the process UID.
References
9b29abf9-4ab0-4765-b253-1875cd9b441ehttps://github.com/lstein/Perl-GD/commit/67b163713c6c78dfeb693da0978ae934e5cd8210.patch
9b29abf9-4ab0-4765-b253-1875cd9b441ehttps://metacpan.org/release/RURBAN/GD-2.86/changes
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/06/14/4
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2026/06/msg00027.html
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "GD",
          "product": "GD",
          "programFiles": [
            "lib/GD/Image.pm",
            "lib/GD/Image_pm.PL"
          ],
          "programRoutines": [
            {
              "name": "GD::Image::_make_filehandle"
            }
          ],
          "repo": "https://github.com/lstein/Perl-GD",
          "vendor": "RURBAN",
          "versions": [
            {
              "lessThan": "2.86",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "GD versions before 2.86 for Perl allow OS command injection and file overwrite via a 2-arg open() of filename arguments in _make_filehandle.\n\nGD::Image::_make_filehandle opens a filename argument with Perl\u0027s 2-arg open(), so a filename that begins or ends with a pipe (\"| cmd\", \"cmd |\") or begins with a redirect (\"\u003e path\", \"\u003e\u003e path\") is run as a command or redirect rather than opened as a file. _make_filehandle is the single open path behind every filename-accepting constructor (new, newFromPng, newFromJpeg, and the rest); the in-memory *Data variants do not open a path and are unaffected.\n\nAny caller that forwards untrusted input to one of these constructors as a pathname can run an arbitrary command or truncate a file under the process UID."
    },
    {
      "lang": "es",
      "value": "Las versiones de GD anteriores a la 2.86 para Perl permiten la inyecci\u00f3n de comandos del sistema operativo y la sobrescritura de archivos a trav\u00e9s de una funci\u00f3n open() de 2 argumentos de los argumentos de nombre de archivo en _make_filehandle.\n\nGD::Image::_make_filehandle abre un argumento de nombre de archivo con la funci\u00f3n open() de 2 argumentos de Perl, por lo que un nombre de archivo que comienza o termina con una tuber\u00eda (\u0027| cmd\u0027, \u0027cmd |\u0027) o comienza con una redirecci\u00f3n (\u0027\u003e path\u0027, \u0027\u003e\u003e path\u0027) se ejecuta como un comando o redirecci\u00f3n en lugar de abrirse como un archivo. _make_filehandle es la \u00fanica ruta de apertura detr\u00e1s de cada constructor que acepta nombres de archivo (new, newFromPng, newFromJpeg y el resto); las variantes Data en memoria no abren una ruta y no se ven afectadas.\n\nCualquier llamador que reenv\u00ede entrada no confiable a uno de estos constructores como una ruta de archivo puede ejecutar un comando arbitrario o truncar un archivo bajo el UID del proceso."
    }
  ],
  "id": "CVE-2026-11526",
  "lastModified": "2026-07-23T10:10:00.170",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-11526",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-15T16:17:04.865826Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-14T12:16:22.403",
  "references": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://github.com/lstein/Perl-GD/commit/67b163713c6c78dfeb693da0978ae934e5cd8210.patch"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://metacpan.org/release/RURBAN/GD-2.86/changes"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/06/14/4"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2026/06/msg00027.html"
    }
  ],
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-73"
        },
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary"
    }
  ]
}



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