CVE-2026-89426 Knit Pay <= 9.6.1.0 - Authenticated (Subscriber+) Privilege Escalation via Gravity Forms Role Field
Authenticated subscribers can escalate to administrator by manipulating Gravity Forms role fields in the Knit Pay WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-89426?
CVE-2026-89426 is a high-severity vulnerability in knitpay Knit Pay – Cashfree, Instamojo, Razorpay, PayPal and more, published on 25 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-269
Which versions are affected by CVE-2026-89426?
How do I fix CVE-2026-89426?
No fix has been published for CVE-2026-89426 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-89426 being exploited?
There is no known exploitation of CVE-2026-89426 in the wild and no public exploit code.
Sources
Also known as GHSA-mhvq-rh33-27cf.