CVE-2026-66000: Frappe: Unrestricted access to Document Follow APIs

Severity: low (CVSS 2.3 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-07 · updated 2026-09-08
Weakness: CWE-863

Description

Frappe is a full-stack web application framework. Prior to 16.23.0 and 15.112.0, Document Follow notification generation does not re-evaluate the recipient's current document permissions, allowing users whose access was revoked or reduced to continue receiving document data by email. This issue is fixed in versions 16.23.0 and 15.112.0.

Affected products

frappe: from 16.0.0-beta.1, < 16.19.0; from 15.0.0, < 15.109.0

References

https://github.com/frappe/frappe/commit/0914acb998004b3878eb5cf57b765115305b49a6
https://github.com/frappe/frappe/commit/b02c1aec2c75eb0819cc6730dd230c2acb0fa60d
https://github.com/frappe/frappe/security/advisories/GHSA-wcm9-vvcc-r8pr

Get alerted when CVE-2026-66000 or the next vulnerability affects your stack