Frappe: Improper Authorization in OAuth2 Consent Endpoint

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-66001
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-20 19:16:58 UTC
Updated2026-08-20 19:16:58 UTC
DescriptionFrappe 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.

Risk And Classification

Primary CVSS: v4.0 8.5 HIGH from [email protected]

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-352 | CWE-352 CWE-352: Cross-Site Request Forgery (CSRF)

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary8.5HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/C...
4.0CNADECLARED8.5HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
Active
Confidentiality
High
Integrity
High
Availability
None
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Frappe Frappe affected < 15.114.0 Not specified
CNA Frappe Frappe affected >= 16.0.0-beta.1, < 16.26.0 Not specified

References

ReferenceSourceLinkTags
github.com/frappe/frappe/commit/eb9c1446cac13236c6d573b136786db2e46254fa [email protected] github.com
github.com/frappe/frappe/commit/d7460769f999c68d3121b680119f8724ddd3eb9d [email protected] github.com
github.com/frappe/frappe/pull/40073 [email protected] github.com
github.com/frappe/frappe/pull/40700 [email protected] github.com
github.com/frappe/frappe/releases/tag/v16.26.0 [email protected] github.com
github.com/frappe/frappe/pull/40701 [email protected] github.com
github.com/frappe/frappe/security/advisories/GHSA-2ph8-x773-8p2x [email protected] github.com
github.com/frappe/frappe/commit/336c7d335db762b494acdfe43aea69d459fd51d7 [email protected] github.com
github.com/frappe/frappe/releases/tag/v15.114.0 [email protected] github.com
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