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CVE-2016-4427

Estado: ModificadaAlta (7.5)—

En zulip versiones anteriores a 1.3.12, los usuarios deshabilitados podían acceder a los mensajes si el SSO estaba habilitado

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)

Zulip — Zulip

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2016-4427",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "zulip",
          "versions": [
            {
              "status": "affected",
              "version": "zulip 1.3.12"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-07-28T17:15:08.180",
  "references": [
    {
      "url": "https://zulip.readthedocs.io/en/2.1.7/overview/changelog.html#id35",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://zulip.readthedocs.io/en/2.1.7/overview/changelog.html#id35",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In zulip before 1.3.12, deactivated users could access messages if SSO was enabled."
    },
    {
      "lang": "es",
      "value": "En zulip versiones anteriores a 1.3.12, los usuarios deshabilitados podían acceder a los mensajes si el SSO estaba habilitado"
    }
  ],
  "lastModified": "2026-06-17T00:47:32.130",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:zulip:zulip:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "39F96717-754B-46C6-ACFF-C96DB337A6B1",
              "versionEndExcluding": "1.3.12"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}