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CVE-2018-1000836

Estado: ModificadaCrítica (9)—

bw-calendar-engine version <= bw-calendar-engine-3.12.0 contains a XML External Entity (XXE) vulnerability in IscheduleClient XML Parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via Man in the Middle or malicious server.

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)

Apereo — Bw-calendar-engine

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2018-1000836",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
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        "userInteractionRequired": false
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    "cvssMetricV30": [
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        "type": "Primary",
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        "cvssData": {
          "scope": "CHANGED",
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          "baseScore": 9,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 6,
        "exploitabilityScore": 2.2
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  "affected": [
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      "affectedData": [
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          "vendor": "n/a",
          "product": "n/a",
          "versions": [
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              "version": "n/a"
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  ],
  "published": "2018-12-20T15:29:01.657",
  "references": [
    {
      "url": "https://0dd.zone/2018/10/28/bw-calendar-engine-XXE-MitM/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
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      "tags": [
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    {
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-611"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "bw-calendar-engine version <= bw-calendar-engine-3.12.0 contains a XML External Entity (XXE) vulnerability in IscheduleClient XML Parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via Man in the Middle or malicious server."
    },
    {
      "lang": "es",
      "value": "bw-calendar-engine, en versiones iguales o anteriores a la bw-calendar-engine-3.12.0, contiene una vulnerabilidad de XEE (XML External Entity) en el analizador de XML IscheduleClient que puede resultar en la divulgación de datos confidenciales, una denegación de servicio (DoS), Server-Side Request Forgery (SSRF) o el escaneo de puertos. El ataque parece ser explotable mediante un Man-in-the-Middle (MitM) o un servidor malicioso."
    }
  ],
  "lastModified": "2026-06-17T01:33:08.843",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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  "sourceIdentifier": "cve@mitre.org"
}