CVE-2026-5082

{
  "id": "CVE-2026-5082",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-5082",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-04-08T16:09:08.752556Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "repo": "https://github.com/tokuhirom/Amon2-Plugin-Web-CSRFDefender",
          "vendor": "TOKUHIROM",
          "product": "Amon2::Plugin::Web::CSRFDefender",
          "versions": [
            {
              "status": "affected",
              "version": "7.00",
              "versionType": "custom",
              "lessThanOrEqual": "7.03"
            }
          ],
          "packageName": "Amon2-Plugin-Web-CSRFDefender",
          "programFiles": [
            "lib/Amon2/Plugin/Web/CSRFDefender/Random.pm"
          ],
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "programRoutines": [
            {
              "name": "Amon2::Plugin::Web::CSRFDefender::Random::generate_session_id"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-04-08T06:16:28.993",
  "references": [
    {
      "url": "https://metacpan.org/release/TOKUHIROM/Amon2-Plugin-Web-CSRFDefender-7.03/source/lib/Amon2/Plugin/Web/CSRFDefender/Random.pm",
      "tags": [
        "Product"
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://metacpan.org/release/TOKUHIROM/Amon2-Plugin-Web-CSRFDefender-7.04/changes",
      "tags": [
        "Release Notes"
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-15604",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "description": [
        {
          "lang": "en",
          "value": "CWE-338"
        },
        {
          "lang": "en",
          "value": "CWE-340"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Amon2::Plugin::Web::CSRFDefender versions from 7.00 through 7.03 for Perl generate an insecure session id.\n\nThe generate_session_id function will attempt to read bytes from the /dev/urandom device, but if that is unavailable then it generates bytes using SHA-1 hash seeded with the built-in rand() function, the PID, and the high resolution epoch time.  The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.\n\nAmon2::Plugin::Web::CSRFDefender versions before 7.00 were part of Amon2, which was vulnerable to insecure session ids due to CVE-2025-15604.\n\nNote that the author has deprecated this module."
    },
    {
      "lang": "es",
      "value": "Las versiones de Amon2::Plugin::Web::CSRFDefender de la 7.00 a la 7.03 para Perl generan un ID de sesión inseguro.\n\nLa función generate_session_id intentará leer bytes del dispositivo /dev/urandom, pero si este no está disponible, entonces genera bytes usando un hash SHA-1 inicializado con la función rand() incorporada, el PID y el tiempo de época de alta resolución. El PID provendrá de un pequeño conjunto de números, y el tiempo de época puede ser adivinado, si no se filtra del encabezado HTTP Date. La función rand incorporada no es adecuada para uso criptográfico.\n\nLas versiones de Amon2::Plugin::Web::CSRFDefender anteriores a la 7.00 formaban parte de Amon2, el cual era vulnerable a IDs de sesión inseguros debido a CVE-2025-15604.\n\nTenga en cuenta que el autor ha desaprobado este módulo."
    }
  ],
  "lastModified": "2026-07-24T20:10:00.147",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:tokuhirom:amon2\\:\\:plugin\\:\\:web\\:\\:csrfdefender:*:*:*:*:*:perl:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9976BCB7-13C5-4F44-A248-29D54E13E64E",
              "versionEndIncluding": "7.03",
              "versionStartIncluding": "7.00"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
}