Medium 6.9Published Aug 20, 2026

CVE-2026-66002Frappe: User Enumeration via PDDR

Updated under an hour ago (2026-10-19 09:00 UTC)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 6.9 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-204
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Aug 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

frappe frappe frappe:frappe (from the name)	before 15.115.0; from 16.0.0-beta.1, < 16.27.0	CNA record

References

https://github.com/frappe/frappe/security/advisories/GHSA-c2xv-c53h-qvr5x-refsource-confirm
https://github.com/frappe/frappe/pull/40787x-refsource-misc
https://github.com/frappe/frappe/pull/40814x-refsource-misc
https://github.com/frappe/frappe/pull/40815x-refsource-misc
https://github.com/frappe/frappe/commit/30fe0b4118ff94c95c239dce4bc74ec4ca10a827x-refsource-misc
https://github.com/frappe/frappe/commit/47a396ec59f5362029feb349eb2b9d10a21afcf8x-refsource-misc
https://github.com/frappe/frappe/commit/4b32a4e0072e61ce0abcb0d09cfd1f14724fe896x-refsource-misc
https://github.com/frappe/frappe/releases/tag/v15.115.0x-refsource-misc
https://github.com/frappe/frappe/releases/tag/v16.27.0x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.