# CVE-2026-12998 — wpmudev Forminator Forms – Contact Form, Payment Form & Custom Form Builder

> As of 2026-08-17, CVE-2026-12998 is a MEDIUM-severity vulnerability in wpmudev Forminator Forms – Contact Form, Payment Form & Custom Form Builder, CVSS v3.1 5.3, EPSS 0.5% (42.6th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-12998, most recently “CVE-2026-15748: Forminator WordPress Plugin Arbitrary File Upload Enables Unauthenticated RCE”.

**Last updated:** 2026-08-17

## What is CVE-2026-12998?

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, 1.55.0.2 via the 'draft' parameter due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to enumerate sequential integer entry IDs via the 'draft' parameter and read other users' saved draft form data, including names, email addresses, phone numbers, addresses, and free-form message content. This is only exploitable on forms that have the 'Save and Continue' feature enabled.

The record classifies CVE-2026-12998 under weakness class [CWE-639](https://intel.threadlinqs.com/cwe/CWE-639). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 84 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 5.3 — MEDIUM (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **EPSS (FIRST):** 0.5% probability of exploitation in the next 30 days, higher than 42.6% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.4/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-16, last modified 2026-08-17

## Is CVE-2026-12998 being exploited?

It currently carries a trending score of 32 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **wpmudev**: Forminator Forms – Contact Form, Payment Form & Custom Form Builder

## How to fix CVE-2026-12998

No vendor patch reference has been recorded for CVE-2026-12998 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-12998

1 tracked threat in the Threadlinqs corpus references CVE-2026-12998, either in the campaign’s CVE list or as an indicator on the campaign record.

- [CVE-2026-15748: Forminator WordPress Plugin Arbitrary File Upload Enables Unauthenticated RCE](https://intel.threadlinqs.com/threat/TL-2026-2052) — CRITICAL · 2026-08-17

## Sources

Enriched from CVE.org, FIRST EPSS. Last verified by Threadlinqs on 2026-10-10.

**Other references**

- [wordfence.com](https://www.wordfence.com/threat-intel/vulnerabilities/id/36aa7193-0e31-4084-97d0-8c22ebff3f05?source=cve)
- [plugins.trac.wordpress.org](https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.0/library/render/class-render-form.php#L2011)
- [plugins.trac.wordpress.org (class render form)](https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.0/library/render/class-render-form.php#L2000)
- [plugins.trac.wordpress.org (class form entry model)](https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.0/library/model/class-form-entry-model.php#L160)
- [plugins.trac.wordpress.org (class form entry model)](https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.0/library/model/class-form-entry-model.php#L212)

_Showing 5 of 10 recorded references._

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-12998
Every threat comes with one complete detection in Splunk SPL, Microsoft KQL and Sigma, free for everyone; a free account adds daily TL Creds to unlock the rest. Sign up free (Blue): https://threadlinqs.com/?modal=signup
Indicator values unlock with TL Creds (https://threadlinqs.com/tl-creds); MCP access for AI agents needs Purple: https://intel.threadlinqs.com/mcp