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CVE-2026-45190

Estado: AplazadaMedia (6.5)—

Net::CIDR::Lite versions before 0.24 for Perl does not properly validate IP address and CIDR mask inputs, which may allow IP ACL bypass.

Inputs containing a trailing newline or non-ASCII digit characters pass the validators but are then re-encoded by the parser to a different address than the input string spelled. find() and bin_find() can match or miss addresses as a result.

Example:

See also CVE-2026-45191.

Detalles técnicos trazas, registros y código del informe original
  my $cidr = Net::CIDR::Lite->new();
  $cidr->add("::1\n/128");
  $cidr->find("::1a");  # incorrectly returns true

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)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

NET Cidr Lite Project — NET Cidr LiteAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-45190",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-45190",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-12T14:30:52.674727Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "repo": "https://github.com/stigtsp/Net-CIDR-Lite",
          "vendor": "STIGTSP",
          "product": "Net::CIDR::Lite",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "0.24",
              "versionType": "custom"
            }
          ],
          "packageName": "Net-CIDR-Lite",
          "programFiles": [
            "Lite.pm"
          ],
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "programRoutines": [
            {
              "name": "Net::CIDR::Lite::add"
            },
            {
              "name": "Net::CIDR::Lite::_pack_ipv4"
            },
            {
              "name": "Net::CIDR::Lite::_pack_ipv6"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-05-10T21:16:29.273",
  "references": [
    {
      "url": "https://github.com/stigtsp/Net-CIDR-Lite/commit/ca9542adec87110556601d7ce48381ea8d13e692.patch",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://metacpan.org/release/STIGTSP/Net-CIDR-Lite-0.24/changes",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45191",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1289"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Net::CIDR::Lite versions before 0.24 for Perl does not properly validate IP address and CIDR mask inputs, which may allow IP ACL bypass.\n\nInputs containing a trailing newline or non-ASCII digit characters pass the validators but are then re-encoded by the parser to a different address than the input string spelled. find() and bin_find() can match or miss addresses as a result.\n\nExample:\n\n  my $cidr = Net::CIDR::Lite->new();\n  $cidr->add(\"::1\\n/128\");\n  $cidr->find(\"::1a\");  # incorrectly returns true\n\nSee also CVE-2026-45191."
    },
    {
      "lang": "es",
      "value": "Las versiones de Net::CIDR::Lite anteriores a la 0.24 para Perl no validan correctamente las entradas de dirección IP y máscara CIDR, lo que puede permitir la omisión de ACL de IP.\n\nLas entradas que contienen un salto de línea final o caracteres de dígitos no ASCII pasan los validadores, pero luego son recodificadas por el analizador a una dirección diferente de la que especifica la cadena de entrada. find() y bin_find() pueden coincidir o no con direcciones como resultado.\n\nEjemplo:\n\n  my $cidr = Net::CIDR::Lite -> new();\n  $cidr -> add('::1\\n/128');\n  $cidr -> find('::1a');  # devuelve true incorrectamente\n\nVéase también CVE-2026-45191."
    }
  ],
  "lastModified": "2026-07-24T13:10:00.223",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
}