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CVE-2026-31381

Estado: AnalizadaMedia (5.3)—

An attacker can extract user email addresses (PII) exposed in base64 encoding via the state parameter in the OAuth callback URL.

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)

Gainsight — Assist

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-31381",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-31381",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-20T13:43:11.518701Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
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        "source": "cve@rapid7.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@rapid7.com",
      "affectedData": [
        {
          "vendor": "Gainsight",
          "product": "Gainsight Assist",
          "versions": [
            {
              "status": "unknown",
              "version": "0",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
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  ],
  "published": "2026-03-20T14:16:14.567",
  "references": [
    {
      "url": "http://www.rapid7.com/blog/post/ve-cve-2026-31381-cve-2026-31382-gainsight-assist-information-disclosure-xss-fixed",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@rapid7.com"
    },
    {
      "url": "https://communities.gainsight.com/community-news-2/recent-gainsight-assist-plugin-remediations-cve-2026-31381-and-cve-2026-31382-30587",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@rapid7.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve@rapid7.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-598"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An attacker can extract user email addresses (PII) exposed in base64 encoding via the state parameter in the OAuth callback URL."
    },
    {
      "lang": "es",
      "value": "Un atacante puede extraer direcciones de correo electrónico de usuario (IIP) expuestas en codificación base64 a través del parámetro state en la URL de devolución de llamada de OAuth."
    }
  ],
  "lastModified": "2026-06-17T10:33:36.493",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:gainsight:assist:-:*:*:*:*:*:*:*",
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  "sourceIdentifier": "cve@rapid7.com"
}