Knit Pay Plugin up to 9.6.1.0 on WordPress maybe_update_user_role lead[created_by] privileges management

Summaryinfo

A vulnerability, which was classified as critical, was found in Knit Pay Plugin up to 9.6.1.0. The affected element is the function maybe_update_user_role. The manipulation of the argument lead[created_by] results in privileges management. This vulnerability is identified as CVE-2026-89426. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Knit Pay Plugin up to 9.6.1.0. It has been classified as critical. Affected is the function maybe_update_user_role. The manipulation of the argument lead[created_by] with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The Knit Pay – Cashfree, Instamojo, Razorpay, PayPal and more plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 9.6.1.0. This is due to the `maybe_update_user_role()` function reading the target role directly from an attacker-controlled Gravity Forms entry field — configured via the feed's `user_role_field_id` — and passing it to `WP_User::set_role()` without validating the supplied value against an allowlist of permitted roles. This makes it possible for authenticated attackers, with Subscriber-level access and above, to elevate their privileges to administrator by tampering with the hidden role field value at form submission time. Exploitation is further enabled by the fact that $0 orders are synchronously marked as SUCCESS during form submission without requiring a real payment, and when no GF User Registration user can be resolved, the role assignment target falls back to `$lead['created_by']` — the currently authenticated submitter's own user ID — making any authenticated form submitter an eligible exploitation target.

The advisory is available at wordfence.com. This vulnerability is traded as CVE-2026-89426 since 09/11/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/25/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Name

• Knit Pay Plugin

Version

• 9.6.0
• 9.6.1.0

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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