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CVE-2026-66001— Frappe: Improper Authorization in OAuth2 Consent Endpoint

Quick assessment

Affected
frappe frappe
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Frappe 是一个全栈 Web 应用框架。在版本 15.114.0 和 16.26.0 之前，frappe/integrations/oauth2.py 中的 approve（批准）和 authorize（授权）函数存在安全缺陷：允许 OAuth2 同意流程在以下不安全条件下继续执行： 1. 未限制 approve 操作必须通过 HTTP POST 方法发起； 2. frappe/templates/includes/oauth_confirmation.html 模板中未包含 CSRF 令牌（csrf_toke

CVSS 8.5 · High EPSS 0.23% · P14

Affected Version Matrix 2

VendorProduct Version RangeStatus
frappe frappe < 15.114.0 affected
>= 16.0.0-beta.1, < 16.26.0 affected
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I. Basic Information for CVE-2026-66001

Vulnerability Information
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Vulnerability Title
Frappe: Improper Authorization in OAuth2 Consent Endpoint
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
frappe frappe < 15.114.0 -

II. Public POCs for CVE-2026-66001

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 9593 chars
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III. Intelligence Information for CVE-2026-66001

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Patches & Fixes for CVE-2026-66001 (6)

Vendor Advisories for CVE-2026-66001 (1)

Vendor Pages for CVE-2026-66001 (2)

Same Patch Batch · frappe · 2026-08-20 · 5 CVEs total

CVE-2026-62315 7.1 HIGH Frappe: Mass assignment via set_value
CVE-2026-66002 6.9 MEDIUM Frappe: User Enumeration via PDDR
CVE-2026-63654 6.9 MEDIUM Frappe: Unauthenticated Workflow approval via confirm_action
CVE-2026-53569 5.3 MEDIUM Frappe: Missing authorization in toggle_like and mark_as_seen

IV. Related Vulnerabilities

Same product: frappe
Same vendor: frappe
Same weakness: CWE-352

V. Comments for CVE-2026-66001

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