CVE-2026-66002
A remote attacker can compare the responses to enumerate registered users.
Does this matter?
Lower severity and a low EPSS score (0.47%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 4.0
- 6.9 MEDIUMCVSS: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
- EPSS
- 0.47% probability · 39th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-204
- Source
- security-advisories@github.com
References
- https://github.com/frappe/frappe/commit/30fe0b4118ff94c95c239dce4bc74ec4ca10a827
- https://github.com/frappe/frappe/commit/47a396ec59f5362029feb349eb2b9d10a21afcf8
- https://github.com/frappe/frappe/commit/4b32a4e0072e61ce0abcb0d09cfd1f14724fe896
- https://github.com/frappe/frappe/pull/40787
- https://github.com/frappe/frappe/pull/40814
- https://github.com/frappe/frappe/pull/40815
- https://github.com/frappe/frappe/releases/tag/v15.115.0
- https://github.com/frappe/frappe/releases/tag/v16.27.0
- https://github.com/frappe/frappe/security/advisories/GHSA-c2xv-c53h-qvr5
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.