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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是印度Frappe公司开源的一款构建业务应用的开发框架。 Frappe 15.114.0之前版本和16.26.0之前版本存在跨站请求伪造漏洞，该漏洞源于OAuth2同意流程未限制approve为POST、缺少csrf_token且未将活动OAuth令牌检查限定到请求客户端，可能导致攻击者诱使已认证用户批准OAuth授权或为错误客户端重用授权状态，暴露数据并允许在授权范围内操作。

CVSS 8.5 · High EPSS 0.34% · P26

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
Vulnerability Title
Frappe 跨站请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Frappe是印度Frappe公司开源的一款构建业务应用的开发框架。 Frappe 15.114.0之前版本和16.26.0之前版本存在跨站请求伪造漏洞，该漏洞源于OAuth2同意流程未限制approve为POST、缺少csrf_token且未将活动OAuth令牌检查限定到请求客户端，可能导致攻击者诱使已认证用户批准OAuth授权或为错误客户端重用授权状态，暴露数据并允许在授权范围内操作。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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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