CVE-2026-66058: Frappe

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

Frappe is a full-stack web application framework. Prior to 16.20.0 and 15.112.0, unrestricted access to a Document Follow API (update_follow) is possible for an authenticated user. This issue is fixed in versions 16.20.0 and 15.112.0.

Affected products

• Frappe Frappe: from 16.0.0-beta.1, before 16.20.0 (fixed in 16.20.0); before 15.112.0 (fixed in 15.112.0)

Published 2026-08-07. Last modified 2026-09-08.