WPMU DEV Forminator Forms Plugin up to 1.57.3.1 on WordPress previous_draft_id resource injection

Summaryinfo

A vulnerability classified as problematic has been found in WPMU DEV Forminator Forms Plugin up to 1.57.3.1. This vulnerability affects unknown code. Performing a manipulation of the argument previous_draft_id results in resource injection. This vulnerability is reported as CVE-2026-97638. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, was found in WPMU DEV Forminator Forms Plugin up to 1.57.3.1. This affects some unknown processing. The manipulation of the argument previous_draft_id with an unknown input leads to a resource injection vulnerability. CWE is classifying the issue as CWE-99. The product receives input from an upstream component, but it does not restrict or incorrectly restricts the input before it is used as an identifier for a resource that may be outside the intended sphere of control. This is going to have an impact on integrity, and availability. The summary by CVE is:

The Forminator Forms – Contact Form, Payment Form & Custom Form Builder plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.57.3.1 via the 'previous_draft_id' parameter due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to delete arbitrary saved drafts belonging to other users and take over those draft identifiers by overwriting them with attacker-controlled form submissions. This requires the attacker to have obtained a victim's draft_id, which may be harvested from a shared "continue later" link; the nominally present nonce check is effectively bypassed because the nonce is publicly obtainable by any unauthenticated visitor loading a form page.

It is possible to read the advisory at wordfence.com. This vulnerability is uniquely identified as CVE-2026-97638 since 09/24/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. 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 10/30/2026).

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

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Productinfo

Type

• WordPress Plugin

Vendor

• WPMU DEV

Name

• Forminator Forms Plugin

Version

• 1.57.3.0
• 1.57.3.1

CPE 2.3info

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CPE 2.2info

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