What’s Vulnerable › Vulnerabilities

CVE-2026-66003: Frappe: Access control bypass via REST API dot-notation fields on linked doctypes

• Severity: high (CVSS 7.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-26 · updated 2026-09-09
• Weakness: CWE-863

Description

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.

Affected products

• frappe: before 15.115.0

References

• https://github.com/frappe/frappe/releases/tag/v15.115.0
• https://github.com/frappe/frappe/security/advisories/GHSA-p25m-7rvg-6fvr

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