CVE-2022-31168
Zulip es una herramienta de chat de equipo de código abierto. Debido a una comprobación de autorización incorrecta en Zulip Server versiones 5.4 y anteriores, un miembro de una organización podría diseñar una llamada a la API que conceda privilegios de administrador de la organización a uno de sus bots. La vulnerabilidad ha sido corregida en Zulip Server versión 5.5. Los miembros que no posean ningún bot, y carezcan de permiso para crearlos, no pueden explotar la vulnerabilidad. Como mitigación a la vulnerabilidad, un administrador de la organización puede restringir el permiso "Who can create bots" a administradores solamente, y cambiar la propiedad de los bots existentes
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 8.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.82%
- Percentil entre todas las CVEs puntuadas: 56
- Fecha de la puntuación: 9/10/2026
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)
CWE
- CWE-285, CWE-863
Referencias
- https://github.com/zulip/zulip/commit/751b2a03e565e9eb02ffe923b7c24ac73d604034
- https://github.com/zulip/zulip/releases/tag/5.5
- https://github.com/zulip/zulip/security/advisories/GHSA-c3cp-ggg5-9xw5
- https://github.com/zulip/zulip/commit/751b2a03e565e9eb02ffe923b7c24ac73d604034
- https://github.com/zulip/zulip/releases/tag/5.5
- https://github.com/zulip/zulip/security/advisories/GHSA-c3cp-ggg5-9xw5
JSON original (NVD)
Mostrar
{
"id": "CVE-2022-31168",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2022-31168",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2025-04-23T14:03:12.789776Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "security-advisories@github.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.4,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "LOW",
"confidentialityImpact": "LOW"
},
"impactScore": 2.5,
"exploitabilityScore": 2.8
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 8.8,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 2.8
}
]
},
"affected": [
{
"source": "security-advisories@github.com",
"affectedData": [
{
"vendor": "zulip",
"product": "zulip",
"versions": [
{
"status": "affected",
"version": "< 5.5"
}
]
}
]
}
],
"published": "2022-07-22T13:15:08.540",
"references": [
{
"url": "https://github.com/zulip/zulip/commit/751b2a03e565e9eb02ffe923b7c24ac73d604034",
"tags": [
"Patch",
"Third Party Advisory"
],
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/zulip/zulip/releases/tag/5.5",
"tags": [
"Release Notes",
"Third Party Advisory"
],
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/zulip/zulip/security/advisories/GHSA-c3cp-ggg5-9xw5",
"tags": [
"Third Party Advisory"
],
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/zulip/zulip/commit/751b2a03e565e9eb02ffe923b7c24ac73d604034",
"tags": [
"Patch",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://github.com/zulip/zulip/releases/tag/5.5",
"tags": [
"Release Notes",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://github.com/zulip/zulip/security/advisories/GHSA-c3cp-ggg5-9xw5",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Secondary",
"source": "security-advisories@github.com",
"description": [
{
"lang": "en",
"value": "CWE-285"
},
{
"lang": "en",
"value": "CWE-863"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Zulip is an open source team chat tool. Due to an incorrect authorization check in Zulip Server 5.4 and earlier, a member of an organization could craft an API call that grants organization administrator privileges to one of their bots. The vulnerability is fixed in Zulip Server 5.5. Members who don’t own any bots, and lack permission to create them, can’t exploit the vulnerability. As a workaround for the vulnerability, an organization administrator can restrict the `Who can create bots` permission to administrators only, and change the ownership of existing bots."
},
{
"lang": "es",
"value": "Zulip es una herramienta de chat de equipo de código abierto. Debido a una comprobación de autorización incorrecta en Zulip Server versiones 5.4 y anteriores, un miembro de una organización podría diseñar una llamada a la API que conceda privilegios de administrador de la organización a uno de sus bots. La vulnerabilidad ha sido corregida en Zulip Server versión 5.5. Los miembros que no posean ningún bot, y carezcan de permiso para crearlos, no pueden explotar la vulnerabilidad. Como mitigación a la vulnerabilidad, un administrador de la organización puede restringir el permiso \"Who can create bots\" a administradores solamente, y cambiar la propiedad de los bots existentes"
}
],
"lastModified": "2026-06-17T04:44:57.040",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:zulip:zulip:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "524C7064-D386-4FB6-AB29-54123411EB07",
"versionEndExcluding": "5.5"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "security-advisories@github.com"
}