CVE-2026-41873

{
  "id": "CVE-2026-41873",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-28T16:16:13.670",
  "lastModified": "2026-10-26T20:10:00.160",
  "vulnStatus": "Modified",
  "cveTags": [
    {
      "sourceIdentifier": "[email protected]",
      "tags": [
        "unsupported-when-assigned"
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "** UNSUPPORTED WHEN ASSIGNED ** Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Pony Mail leading to admin account takeover.\n\nThis issue affects all versions of the Lua implementation of Pony Mail. There is a Python implementation under development under the name \"Pony Mail Foal\" that is not affected by this issue, but hasn't been released yet.\n\nAs the Lua implementation of this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users.\n\nNOTE: This vulnerability only affects products that are no longer supported by the maintainer."
    },
    {
      "lang": "es",
      "value": "NO SOPORTADO AL ASIGNARSE Vulnerabilidad de interpretación inconsistente de solicitudes HTTP (’Contrabando de solicitudes/respuestas HTTP’) en Pony Mail que conduce a la toma de control de la cuenta de administrador.\n\nEste problema afecta a todas las versiones de la implementación en Lua de Pony Mail. Existe una implementación en Python en desarrollo bajo el nombre ’Pony Mail Foal’ que no se ve afectada por este problema, pero aún no ha sido lanzada.\n\nDado que la implementación en Lua de este proyecto está retirada, no planeamos lanzar una versión que corrija este problema. Se recomienda a los usuarios que busquen una alternativa o restrinjan el acceso a la instancia a usuarios de confianza.\n\nNOTA: Esta vulnerabilidad solo afecta a productos que ya no son compatibles con el mantenedor."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Pony Mail",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "lessThanOrEqual": "*",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      },
      {
        "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:H/I:H/A:H",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-29T11:55:16.272926Z",
          "id": "CVE-2026-41873",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-444"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:apache:pony_mail:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D1FA9330-7521-4161-837D-856A31916DAB"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://lists.apache.org/thread/1c7jtxjobh280kqc13fzw1cg57xrz951",
      "source": "[email protected]",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
      ]
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/04/28/17",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ]
}