Everest Forms <= 3.6.2 - Insecure Direct Object Reference to Authenticated (Custom+) Arbitrary Entry/Form Disclosure and Deletion via MCP /tools/call JSON-RPC Endpoint

Summary

CVE	CVE-2026-89101
State	PUBLISHED
Assigner	Wordfence
Source Priority	CVE Program / NVD first with legacy fallback
Published	2026-11-06 12:17:24 UTC
Updated	2026-11-06 16:18:59 UTC
Description	The Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.6.2 via the get_entry due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with custom-level access and above, to view, read, and permanently delete forms and entries belonging to any other user — including personally identifiable information submitted through public contact and lead forms — regardless of form ownership.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-639 | CWE-639 CWE-639 Authorization Bypass Through User-Controlled Key

Version	Source	Type	Score	Severity	Vector
3.1	[email protected]	Secondary	6.5	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`
3.1	CNA	DECLARED	6.5	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`

CVSS v3.1 Breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

Source	Vendor	Product	Version	Platforms
CNA	Wpeverest	Everest Forms Contact Form Payment Form Quiz Survey Custom Form Builder With AI	affected 3.6.2 semver	Not specified

References

Reference	Source	Link	Tags
plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3704878/everest-forms/trunk/includes/abilities/clas...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf...	[email protected]	plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf...	[email protected]	plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/1fabe52a-b51e-4383-ac88-8f30e...	[email protected]	www.wordfence.com
plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf...	[email protected]	plugins.trac.wordpress.org
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Trgomez (en)

Additional Advisory Data

Source	Time	Event
CNA	2026-09-10T21:48:37.000Z	Vendor Notified
CNA	2026-11-05T22:19:09.000Z	Disclosed

There are currently no legacy QID mappings associated with this CVE.