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CVE-2022-31134

Estado: ModificadaMedia (4.9)—

Zulip is an open-source team collaboration tool. Zulip Server versions 2.1.0 above have a user interface tool, accessible only to server owners and server administrators, which provides a way to download a "public data" export. While this export is only accessible to administrators, in many configurations server administrators are not expected to have access to private messages and private streams. However, the "public data" export which administrators could generate contained the attachment contents for all attachments, even those from private messages and streams. Zulip Server version 5.4 contains a patch for this issue.

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 Server

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2022-31134",
  "cveTags": [],
  "metrics": {
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-31134",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-04-23T14:03:27.397354Z"
        }
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    ],
    "cvssMetricV2": [
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        "type": "Primary",
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        "cvssData": {
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
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          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
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          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
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        "exploitabilityScore": 1.2
      },
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          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
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        "impactScore": 3.6,
        "exploitabilityScore": 1.2
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  "affected": [
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      "source": "security-advisories@github.com",
      "affectedData": [
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  ],
  "published": "2022-07-12T21:15:09.910",
  "references": [
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      "url": "https://blog.zulip.com/2022/07/12/zulip-cloud-data-exports",
      "tags": [
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      "source": "security-advisories@github.com"
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    {
      "url": "https://blog.zulip.com/2022/07/12/zulip-server-5-4-security-release",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
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      "source": "security-advisories@github.com"
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      "tags": [
        "Release Notes",
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      "source": "security-advisories@github.com"
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      "url": "https://blog.zulip.com/2022/07/12/zulip-server-5-4-security-release",
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        "Vendor Advisory"
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
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      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Zulip is an open-source team collaboration tool. Zulip Server versions 2.1.0 above have a user interface tool, accessible only to server owners and server administrators, which provides a way to download a \"public data\" export. While this export is only accessible to administrators, in many configurations server administrators are not expected to have access to private messages and private streams. However, the \"public data\" export which administrators could generate contained the attachment contents for all attachments, even those from private messages and streams. Zulip Server version 5.4 contains a patch for this issue."
    },
    {
      "lang": "es",
      "value": "Zulip es una herramienta de colaboración en equipo de código abierto. Zulip Server versiones 2.1.0, presentan una herramienta de interfaz de usuario, accesible sólo para los propietarios y administradores del servidor, que proporciona una forma de descargar una exportación de \"datos públicos\". Aunque esta exportación sólo es accesible para  administradores, en muchas configuraciones no es esperado que los administradores del servidor tengan acceso a los mensajes privados y a los flujos privados. Sin embargo, la exportación de \"datos públicos\" que los administradores podían generar contenía el contenido de todos los archivos adjuntos, incluso los de los mensajes y flujos privados. Zulip Server versión 5.4 contiene un parche para este problema"
    }
  ],
  "lastModified": "2026-06-17T04:44:52.607",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
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              "versionEndExcluding": "5.4",
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          "operator": "OR"
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  "sourceIdentifier": "security-advisories@github.com"
}