Is CVE-2026-109665 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-109665 being exploited in the wild.

How severe is CVE-2026-109665?

Medium severity, with a CVSS score of 4.3, published 12 October 2026.

Which products and versions are affected?

Frappe ERPNext before 15.108.0 and 16.x before 16.18.0.

Is there a fix for CVE-2026-109665?

Yes: fixed in ERPNext 15.108.0, 16.18.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-109665 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-109665?

Check whether you run Frappe ERPNext at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-109665: Frappe ERPNext missing authorization in deactivation endpoints

CVE-2026-109665 · Severity: medium · CVSS 4.3 · Published 2026-10-12

Frappe ERPNext is an open-source enterprise resource planning system used to manage business operations and customer relations. Authenticated users with limited permissions can exploit a missing authorization check to deactivate master records—such as customers, suppliers, or products—that they should not have access to modify, potentially disrupting business operations or data integrity.

Technologies: Frappe ERPNext. Vendors: Frappe.

Quick answers

Is CVE-2026-109665 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-109665 being exploited in the wild.
How severe is CVE-2026-109665?: Medium severity, with a CVSS score of 4.3, published 12 October 2026.
Which products and versions are affected?: Frappe ERPNext before 15.108.0 and 16.x before 16.18.0.
Is there a fix for CVE-2026-109665?: Yes: fixed in ERPNext 15.108.0, 16.18.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-109665 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-109665?: Check whether you run Frappe ERPNext at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: ERPNext 15.108.0, 16.18.0

Technical details

The vulnerability is a missing authorization check (CWE-862) in certain endpoints that deactivate master records. An authenticated user with low privileges can call these endpoints without proper role-based access control, allowing unauthorized modification of data beyond their assigned permissions. The attack requires network access and valid credentials but no user interaction; a fix is available in versions 15.108.0 and 16.18.0.

Affected products

Frappe ERPNext before 15.108.0 and 16.x before 16.18.0

Timeline

2026-08-13: disclosed
2026-10-12: advisory

References

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