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CVE-2026-31798

Estado: AnalizadaMedia (5)—

JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to v4.10.16-lts, JumpServer improperly validates certificates in the Custom SMS API Client. When JumpServer sends MFA/OTP codes via Custom SMS API, an attacker can intercept the request and capture the verification code BEFORE it reaches the user's phone. This vulnerability is fixed in v4.10.16-lts.

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)

Fit2cloud — Jumpserver

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-31798",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
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        "ssvcData": {
          "id": "CVE-2026-31798",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-13T19:38:25.725504Z"
        }
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    "cvssMetricV31": [
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          "attackVector": "NETWORK",
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          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 3.4,
        "exploitabilityScore": 1.6
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "jumpserver",
          "product": "jumpserver",
          "versions": [
            {
              "status": "affected",
              "version": "< 4.10.16-lts"
            }
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      ]
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  ],
  "published": "2026-03-13T19:54:36.097",
  "references": [
    {
      "url": "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-26pj-mmxw-w3w7",
      "tags": [
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      ],
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "security-advisories@github.com",
      "description": [
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          "value": "CWE-295"
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      "lang": "en",
      "value": "JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to v4.10.16-lts, JumpServer improperly validates certificates in the Custom SMS API Client. When JumpServer sends MFA/OTP codes via Custom SMS API, an attacker can intercept the request and capture the verification code BEFORE it reaches the user's phone. This vulnerability is fixed in v4.10.16-lts."
    },
    {
      "lang": "es",
      "value": "JumpServer es un host bastión de código abierto y un sistema de auditoría de seguridad de operación y mantenimiento. Antes de la v4.10.16-lts, JumpServer valida incorrectamente los certificados en el Cliente API de SMS Personalizado. Cuando JumpServer envía códigos MFA/OTP a través de la API de SMS Personalizado, un atacante puede interceptar la solicitud y capturar el código de verificación ANTES de que llegue al teléfono del usuario. Esta vulnerabilidad se corrige en la v4.10.16-lts."
    }
  ],
  "lastModified": "2026-06-17T10:34:29.043",
  "configurations": [
    {
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        {
          "negate": false,
          "cpeMatch": [
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