8.8
HIGH CVSS 3.1
CVE-2026-89426
Knit Pay <= 9.6.1.0 - Authenticated (Subscriber+) Privilege Escalation via Gravity Forms Role Field
Description

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.

INFO

Published Date :

Sept. 25, 2026, 8:16 a.m.

Last Modified :

Sept. 25, 2026, 2:17 p.m.

Remotely Exploit :

Yes !
Affected Products

The following products are affected by CVE-2026-89426 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

No affected product recoded yet

CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 134c704f-9b21-4f2e-91b3-4a467353bcc0
CVSS 3.1 HIGH [email protected]
Solution
Update the Knit Pay plugin to a version that addresses the privilege escalation vulnerability.
  • Update the Knit Pay plugin to the latest version.
  • Verify user roles are correctly assigned.
  • Review plugin settings for security configurations.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-89426 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-89426 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-89426 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2026-89426 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Sep. 25, 2026

    Action Type Old Value New Value
    Added SSVC {'id': 'CVE-2026-89426', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-09-25T12:49:41.552995Z'}
  • New CVE Received by [email protected]

    Sep. 25, 2026

    Action Type Old Value New Value
    Added Description 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.
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-269
    Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/89xxx/CVE-2026-89426.json">CVE-2026-89426</a>
    Added Reference https://plugins.trac.wordpress.org/browser/knit-pay/tags/9.4.0.1/packages/wp-pay-extensions/gravityforms/src/Extension.php#L381
    Added Reference https://plugins.trac.wordpress.org/browser/knit-pay/tags/9.4.0.1/packages/wp-pay-extensions/gravityforms/src/Extension.php#L384
    Added Reference https://plugins.trac.wordpress.org/browser/knit-pay/tags/9.4.0.1/packages/wp-pay-extensions/gravityforms/src/Extension.php#L989
    Added Reference https://plugins.trac.wordpress.org/browser/knit-pay/tags/9.4.0.1/packages/wp-pay-extensions/gravityforms/src/Processor.php#L493
    Added Reference https://plugins.trac.wordpress.org/browser/knit-pay/tags/9.6.1.0/packages/wp-pay-extensions/gravityforms/src/Extension.php#L381
    Added Reference https://plugins.trac.wordpress.org/browser/knit-pay/tags/9.6.1.0/packages/wp-pay-extensions/gravityforms/src/Extension.php#L384
    Added Reference https://plugins.trac.wordpress.org/browser/knit-pay/tags/9.6.1.0/packages/wp-pay-extensions/gravityforms/src/Extension.php#L989
    Added Reference https://plugins.trac.wordpress.org/browser/knit-pay/tags/9.6.1.0/packages/wp-pay-extensions/gravityforms/src/Processor.php#L493
    Added Reference https://plugins.trac.wordpress.org/changeset?reponame=&old=3706862%40knit-pay&new=3706862%40knit-pay
    Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/ee5df686-7bf8-42cc-9356-92570bd02355?source=cve
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.