FKIE_CVE-2026-31381

Vulnerability from fkie_nvd - Published: 2026-03-20 14:16 - Updated: 2026-04-16 15:16
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
An attacker can extract user email addresses (PII) exposed in base64 encoding via the state parameter in the OAuth callback URL.
References
cve@rapid7.comhttp://www.rapid7.com/blog/post/ve-cve-2026-31381-cve-2026-31382-gainsight-assist-information-disclosure-xss-fixedThird Party Advisory
cve@rapid7.comhttps://communities.gainsight.com/community-news-2/recent-gainsight-assist-plugin-remediations-cve-2026-31381-and-cve-2026-31382-30587Vendor Advisory
Impacted products
Vendor Product Version
gainsight assist -
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gainsight:assist:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "CEF026DD-1AD7-44D0-8960-A5DDAE4F1BDE",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "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 electr\u00f3nico de usuario (IIP) expuestas en codificaci\u00f3n base64 a trav\u00e9s del par\u00e1metro state en la URL de devoluci\u00f3n de llamada de OAuth."
    }
  ],
  "id": "CVE-2026-31381",
  "lastModified": "2026-04-16T15:16:53.553",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "cve@rapid7.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-20T14:16:14.567",
  "references": [
    {
      "source": "cve@rapid7.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://www.rapid7.com/blog/post/ve-cve-2026-31381-cve-2026-31382-gainsight-assist-information-disclosure-xss-fixed"
    },
    {
      "source": "cve@rapid7.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://communities.gainsight.com/community-news-2/recent-gainsight-assist-plugin-remediations-cve-2026-31381-and-cve-2026-31382-30587"
    }
  ],
  "sourceIdentifier": "cve@rapid7.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-598"
        }
      ],
      "source": "cve@rapid7.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.