CVE-2026-66001

high

Description

Frappe is a full-stack web application framework. Prior to 15.114.0 and 16.26.0, the approve and authorize functions in frappe/integrations/oauth2.py allow the OAuth2 consent flow to proceed without restricting approve to POST, without a csrf_token in frappe/templates/includes/oauth_confirmation.html, and without scoping an active OAuth token check to the requesting client. An attacker can cause an authenticated user to approve an OAuth grant or reuse authorization state for the wrong client, exposing data and permitting actions within the granted scopes. This issue is fixed in versions 15.114.0 and 16.26.0.

References

https://github.com/frappe/frappe/security/advisories/GHSA-2ph8-x773-8p2x

https://github.com/frappe/frappe/releases/tag/v16.26.0

https://github.com/frappe/frappe/releases/tag/v15.114.0

https://github.com/frappe/frappe/pull/40701

https://github.com/frappe/frappe/pull/40700

https://github.com/frappe/frappe/pull/40073

https://github.com/frappe/frappe/commit/eb9c1446cac13236c6d573b136786db2e46254fa

https://github.com/frappe/frappe/commit/d7460769f999c68d3121b680119f8724ddd3eb9d

https://github.com/frappe/frappe/commit/336c7d335db762b494acdfe43aea69d459fd51d7

Details

Source: Mitre, NVD

Published: 2026-08-20

Updated: 2026-08-25

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 8.1

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Severity: High

CVSS v4

Base Score: 8.5

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Severity: High

EPSS

EPSS: 0.00233