Frappe up to 16.31.0 Client frappe/client.py frappe.client.set_value fieldname type confusion

Summaryinfo

A vulnerability, which was classified as critical, has been found in Frappe up to 16.31.0. This affects the function frappe.client.set_value of the file frappe/client.py of the component Client. This manipulation of the argument fieldname causes type confusion. This vulnerability is registered as CVE-2026-62315. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability has been found in Frappe up to 16.31.0 and classified as critical. Affected by this vulnerability is the function frappe.client.set_value of the file frappe/client.py of the component Client. The manipulation of the argument fieldname with an unknown input leads to a type confusion vulnerability. The CWE definition for the vulnerability is CWE-843. The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Frappe is a full-stack web application framework. In version 16.31.0 and earlier, frappe.client.set_value in frappe/client.py checks a dictionary supplied through the fieldname parameter against forbidden standard and child-table fields before parsing the dictionary into individual field names. An authenticated caller can exploit this type confusion to mass-assign protected fields through the client endpoint. No released fixed version is available as of this review.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-62315 since 07/13/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/20/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• Frappe

Version

• 16.0
• 16.1
• 16.2
• 16.3
• 16.4
• 16.5
• 16.6
• 16.7
• 16.8
• 16.9
• 16.10
• 16.11
• 16.12
• 16.13
• 16.14
• 16.15
• 16.16
• 16.17
• 16.18
• 16.19
• 16.20
• 16.21
• 16.22
• 16.23
• 16.24
• 16.25
• 16.26
• 16.27
• 16.28
• 16.29
• 16.30
• 16.31.0

Website

• Product: https://github.com/frappe/frappe/

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