{"id":"CVE-2026-66002","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-66002","generatedAt":"2026-10-28T02:11:43.591Z","title":"A remote attacker can compare the responses to enumerate registered users.","description":"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.","published":"2026-08-20T19:16:58.000Z","lastModified":"2026-10-26T10:10:00.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":6.9,"severity":"MEDIUM","vector":"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/M"},"cwe":["CWE-204"],"affected":[],"epss":{"score":0.00823,"percentile":0.57075,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.82%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"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","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-66002","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}