CVE-2026-17431

{
  "id": "CVE-2026-17431",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "published": "2026-08-13T00:17:31.917",
  "lastModified": "2026-10-23T19:10:00.167",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "PDF::WebKit versions through 1.2 for Perl allow OS command injection via a 2-arg open() of the output path in to_pdf and of stylesheet paths in _style_tag_for.\n\nto_pdf reads the generated PDF back from its path argument, and _style_tag_for reads each entry of the stylesheets list, by assigning the path to a local @ARGV and reading it with the diamond operator, which opens each @ARGV element with Perl's 2-arg open(). A value that begins or ends with a pipe (\"| cmd\", \"cmd |\") is run as a command rather than opened as a file, and one that begins with a redirect (\"> path\", \">> path\") opens that path for write or append. to_file forwards its path argument to to_pdf and reaches the same read.\n\nAny caller that forwards untrusted input as the output path or as a stylesheets entry can run a command under the process UID; with the \"cmd |\" form the command's output is returned in place of the PDF, and with the \"> path\" form the named file is truncated. Stylesheets may only be added to an HTML source, so a URL or file source exposes the output path alone."
    },
    {
      "lang": "es",
      "value": "Las versiones de PDF::WebKit hasta la 1.2 para Perl permiten la inyección de comandos del sistema operativo a través de una función open() de 2 argumentos de la ruta de salida en to_pdf y de las rutas de las hojas de estilo en _style_tag_for.\n\nto_pdf lee el PDF generado desde su argumento de ruta, y _style_tag_for lee cada entrada de la lista de hojas de estilo, asignando la ruta a una @ARGV local y leyéndola con el operador diamante, que abre cada elemento de @ARGV con la función open() de 2 argumentos de Perl. Un valor que comienza o termina con una barra vertical (’| cmd’, ’cmd |’) se ejecuta como un comando en lugar de abrirse como un archivo, y uno que comienza con una redirección (’> path’, ’>> path’) abre esa ruta para escritura o adición. to_file reenvía su argumento de ruta a to_pdf y alcanza la misma lectura.\n\nCualquier llamador que reenvíe entrada no confiable como la ruta de salida o como una entrada de hojas de estilo puede ejecutar un comando bajo el UID del proceso; con la forma ’cmd |’ la salida del comando se devuelve en lugar del PDF, y con la forma ’> path’ el archivo nombrado se trunca. Las hojas de estilo solo pueden añadirse a una fuente HTML, por lo que una URL o fuente de archivo expone la ruta de salida únicamente."
    }
  ],
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "vendor": "MITHALDU",
          "product": "PDF::WebKit",
          "defaultStatus": "unaffected",
          "collectionURL": "https://cpan.org/modules",
          "packageName": "PDF-WebKit",
          "programFiles": [
            "lib/PDF/WebKit.pm"
          ],
          "programRoutines": [
            {
              "name": "PDF::WebKit::to_pdf"
            },
            {
              "name": "PDF::WebKit::to_file"
            },
            {
              "name": "PDF::WebKit::_style_tag_for"
            }
          ],
          "repo": "https://github.com/kingpong/perl-PDF-WebKit",
          "versions": [
            {
              "version": "0",
              "lessThanOrEqual": "1.2",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 4.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-13T13:09:23.223596Z",
          "id": "CVE-2026-17431",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-73"
        },
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/kingpong/perl-PDF-WebKit/issues/8",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://security.metacpan.org/patches/P/PDF-WebKit/1.2/CVE-2026-17431-r1.patch",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://wkhtmltopdf.org/status.html",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/08/13/3",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ]
}