EUVD-2026-66704Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/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
Network-accessible REST API with low-privilege authentication required (PR:L); pure confidentiality disclosure within same system scope (S:U), no integrity or availability impact.
Primary rating from Vendor (github).
CVSS VectorVendor: github
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/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
Lifecycle Timeline
4DescriptionCVE.org
Frappe is a full-stack web application framework written in Python and JavaScript. Prior to version 15.115.0, an access control bypass in the REST API allows a user to read data from Linked DocTypes that they are not authorized to access. When a document references another document through a Link field, the framework does not consistently enforce the linked DocType's own permissions when the record is retrieved through the REST API, so a low-privileged authenticated user can obtain fields from linked records outside their permitted scope. This issue is fixed in version 15.115.0.
AnalysisAI
Frappe's REST API before v15.115.0 contains an access control bypass (CWE-863) that allows any low-privileged authenticated user to read fields from Linked DocType records outside their permitted scope. When a document is fetched via the REST API, the framework resolves Link field references to other DocTypes but inconsistently re-applies the linked DocType's own permission rules, enabling horizontal data leakage across role boundaries. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid authenticated account with at least low-privileged access to the Frappe instance (confirmed by PR:L in the CVSS 4.0 vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N) scores 7.1, capturing a network-accessible, low-complexity, authenticated read-only confidentiality bypass. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Frappe to version 15.115.0 or later, which contains the vendor-confirmed fix for this authorization bypass (https://github.com/frappe/frappe/releases/tag/v15.115.0; advisory: https://github.com/frappe/frappe/security/advisories/GHSA-p25m-7rvg-6fvr). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify and inventory all Frappe and ERPNext instances in production, noting their versions and deployment architecture (multi-role or multi-tenant). …
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Same weakness CWE-863 – Incorrect Authorization
View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
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