FKIE_CVE-2026-66002

Vulnerability from fkie_nvd - Published: 2026-08-20 19:16 - Updated: 2026-08-21 22:16
Severity
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Summary
Frappe is a full-stack web application framework. Prior to 15.115.0 and 16.27.0, the public request-data web form and PersonalDataDownloadRequest class in frappe/website/doctype/personal_data_download_request/personal_data_download_request.py return distinguishable response shapes for registered and unregistered email addresses, including the user_name field and persistence behavior. A remote attacker can compare the responses to enumerate registered users. This issue is fixed in versions 15.115.0 and 16.27.0.
References
security-advisories@github.comhttps://github.com/frappe/frappe/commit/30fe0b4118ff94c95c239dce4bc74ec4ca10a827
security-advisories@github.comhttps://github.com/frappe/frappe/commit/47a396ec59f5362029feb349eb2b9d10a21afcf8
security-advisories@github.comhttps://github.com/frappe/frappe/commit/4b32a4e0072e61ce0abcb0d09cfd1f14724fe896
security-advisories@github.comhttps://github.com/frappe/frappe/pull/40787
security-advisories@github.comhttps://github.com/frappe/frappe/pull/40814
security-advisories@github.comhttps://github.com/frappe/frappe/pull/40815
security-advisories@github.comhttps://github.com/frappe/frappe/releases/tag/v15.115.0
security-advisories@github.comhttps://github.com/frappe/frappe/releases/tag/v16.27.0
security-advisories@github.comhttps://github.com/frappe/frappe/security/advisories/GHSA-c2xv-c53h-qvr5
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "frappe",
          "vendor": "frappe",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 15.115.0"
            },
            {
              "status": "affected",
              "version": "\u003e= 16.0.0-beta.1, \u003c 16.27.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Frappe is a full-stack web application framework. Prior to 15.115.0 and 16.27.0, the public request-data web form and PersonalDataDownloadRequest class in frappe/website/doctype/personal_data_download_request/personal_data_download_request.py return distinguishable response shapes for registered and unregistered email addresses, including the user_name field and persistence behavior. A remote attacker can compare the responses to enumerate registered users. This issue is fixed in versions 15.115.0 and 16.27.0."
    }
  ],
  "id": "CVE-2026-66002",
  "lastModified": "2026-08-21T22:16:42.930",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.9,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-66002",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-21T21:09:35.845729Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-20T19:16:58.187",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/frappe/frappe/commit/30fe0b4118ff94c95c239dce4bc74ec4ca10a827"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/frappe/frappe/commit/47a396ec59f5362029feb349eb2b9d10a21afcf8"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/frappe/frappe/commit/4b32a4e0072e61ce0abcb0d09cfd1f14724fe896"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/frappe/frappe/pull/40787"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/frappe/frappe/pull/40814"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/frappe/frappe/pull/40815"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/frappe/frappe/releases/tag/v15.115.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/frappe/frappe/releases/tag/v16.27.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/frappe/frappe/security/advisories/GHSA-c2xv-c53h-qvr5"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-204"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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