CVE-2026-5084

{
  "id": "CVE-2026-5084",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "published": "2026-05-11T08:16:16.210",
  "lastModified": "2026-10-26T18:10:00.173",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "WebDyne::Session versions before 3.003_704 for Perl generate the session id insecurely.\n\nThe session handler generates the session id from an MD5 hash seeded with a call to the built-in rand() function. The rand function is passed a maximum value based on the process id, the epoch time and the reference address of the object, but this information will have no effect on the overall quality of the seed of the message digest.\n\nThe rand function is seeded by 32-bits and is predictable. It is considered unsuitable for cryptographic purposes.\n\nPredictable session ids could allow an attacker to gain access to systems.\n\nNote that WebDyne::Session versions 1.042 and earlier appear to be in separate distributions from WebDyne."
    },
    {
      "lang": "es",
      "value": "Las versiones de WebDyne::Session hasta la 2.075 para Perl generan el ID de sesión de forma insegura.\n\nEl gestor de sesión genera el ID de sesión a partir de un hash MD5 inicializado con una llamada a la función rand() incorporada. A la función rand se le pasa un valor máximo basado en el ID del proceso, el tiempo de época y la dirección de referencia del objeto, pero esta información no tendrá ningún efecto en la calidad general de la semilla del resumen del mensaje.\n\nLa función rand se inicializa con 32 bits y es predecible. Se considera inadecuada para fines criptográficos.\n\nLos ID de sesión predecibles podrían permitir a un atacante obtener acceso a los sistemas.\n\nTenga en cuenta que las versiones 1.042 y anteriores de WebDyne::Session parecen estar en distribuciones separadas de WebDyne."
    }
  ],
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "vendor": "ASPEER",
          "product": "WebDyne::Session",
          "defaultStatus": "unaffected",
          "collectionURL": "https://cpan.org/modules",
          "packageName": "WebDyne",
          "programFiles": [
            "lib/WebDyne/Session.pm"
          ],
          "programRoutines": [
            {
              "name": "WebDyne::Session::handler"
            }
          ],
          "repo": "https://github.com/aspeer/WebDyne",
          "versions": [
            {
              "version": "0",
              "lessThan": "3.003_704",
              "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:N/UI:N/S:U/C:L/I:L/A:N",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.5
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-11T16:24:24.075813Z",
          "id": "CVE-2026-5084",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-338"
        },
        {
          "lang": "en",
          "value": "CWE-340"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/aspeer/WebDyne/commit/7a3f949dc24e62a276eb0db629db64aca356e954.patch",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://metacpan.org/release/ASPEER/WebDyne-2.075/source/lib/WebDyne/Session.pm#L120",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://security.metacpan.org/docs/guides/random-data-for-security.html",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://webdyne.org",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/05/11/3",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ]
}