CVE-2026-14803

{
  "id": "CVE-2026-14803",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "published": "2026-07-06T02:16:21.683",
  "lastModified": "2026-10-25T15:10:00.147",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mojo::JSON versions before 9.47 for Perl allow memory exhaustion via unbounded recursion in the pure-Perl decoder.\n\nThe pure-Perl decode path (`_decode_value` dispatching to `_decode_array` and `_decode_object`) recurses with no depth limit, so a small deeply nested JSON document can consume excessive memory.\n\nThis path is the default when Cpanel::JSON::XS is not installed or `MOJO_NO_JSON_XS=1` is set; the Cpanel::JSON::XS fast path is not affected.\n\nAny caller that decodes an untrusted JSON body, for example `Mojo::Message::json` reached through `$c->req->json`, can exhaust process memory and cause denial of service."
    },
    {
      "lang": "es",
      "value": "Las versiones de Mojo::JSON anteriores a la 9.47 para Perl permiten el agotamiento de la memoria a través de recursión ilimitada en el decodificador pure-Perl.\n\nLa ruta de decodificación pure-Perl (’_decode_value’ que despacha a ’_decode_array’ y ’_decode_object’) recurre sin límite de profundidad, por lo que un documento JSON pequeño y profundamente anidado puede consumir memoria excesiva.\n\nEsta ruta es la predeterminada cuando Cpanel::JSON::XS no está instalado o ’MOJO_NO_JSON_XS=1’ está configurado; la ruta rápida de Cpanel::JSON::XS no se ve afectada.\n\nCualquier llamador que decodifique un cuerpo JSON no confiable, por ejemplo ’Mojo::Message::json’ alcanzado a través de ’$c  ->  req  ->  json’, puede agotar la memoria del proceso y causar denegación de servicio."
    }
  ],
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "vendor": "SRI",
          "product": "Mojo::JSON",
          "defaultStatus": "unaffected",
          "collectionURL": "https://cpan.org/modules",
          "packageName": "Mojolicious",
          "programFiles": [
            "lib/Mojo/JSON.pm"
          ],
          "programRoutines": [
            {
              "name": "Mojo::JSON::_decode_array"
            },
            {
              "name": "Mojo::JSON::_decode_object"
            }
          ],
          "repo": "https://github.com/mojolicious/mojo",
          "versions": [
            {
              "version": "0",
              "lessThan": "9.47",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-06T18:50:20.863135Z",
          "id": "CVE-2026-14803",
          "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-674"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/mojolicious/mojo/commit/cc38b0554275c4d84f6b8b49bcbbc1bec2068fe1.patch",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://metacpan.org/release/SRI/Mojolicious-9.47/changes",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/07/06/2",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ]
}