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CVE-2026-33372

Estado: AnalizadaMedia (5.4)—

An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A cross-site request forgery (CSRF) vulnerability exists in Zimbra Webmail due to improper validation of CSRF tokens. The application accepts CSRF tokens supplied within the request body instead of requiring them through the expected request header. An attacker can exploit this issue by tricking an authenticated user into submitting a crafted request. This may allow unauthorized actions to be performed on behalf of the victim.

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)

Synacor — Zimbra Collaboration Suite

CWE

Referencias

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{
  "id": "CVE-2026-33372",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-33372",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-23T13:40:32.695928Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.4,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.5,
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      }
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  "affected": [
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          "versions": [
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  "published": "2026-03-20T14:16:16.357",
  "references": [
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      "url": "https://wiki.zimbra.com/wiki/Security_Center",
      "tags": [
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        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
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  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-352"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A cross-site request forgery (CSRF) vulnerability exists in Zimbra Webmail due to improper validation of CSRF tokens. The application accepts CSRF tokens supplied within the request body instead of requiring them through the expected request header. An attacker can exploit this issue by tricking an authenticated user into submitting a crafted request. This may allow unauthorized actions to be performed on behalf of the victim."
    },
    {
      "lang": "es",
      "value": "Se descubrió un problema en Zimbra Collaboration (ZCS) 10.0 y 10.1. Existe una vulnerabilidad de falsificación de petición en sitios cruzados (CSRF) en Zimbra Webmail debido a una validación incorrecta de los tokens CSRF. La aplicación acepta tokens CSRF suministrados dentro del cuerpo de la petición en lugar de requerirlos a través de la cabecera de petición esperada. Un atacante puede explotar este problema engañando a un usuario autenticado para que envíe una petición manipulada. Esto puede permitir que se realicen acciones no autorizadas en nombre de la víctima."
    }
  ],
  "lastModified": "2026-06-17T10:37:23.570",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "10.1.16",
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            }
          ],
          "operator": "OR"
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  "sourceIdentifier": "cve@mitre.org"
}