Everest Forms - Security Vulnerability (CVE-2026-89101)

Q: Am I affected by this vulnerability?

You are affected if your site runs Everest Forms.

Q: How do I fix it?

Update Everest Forms to the latest available version. Where the vendor has not yet published a fix, remove or disable the plugin until they do.

CVE-2026-89101

Vulnerability CVE-2026-89101 PLUGIN everest-forms MEDIUM

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.

CVE-2026-89101

MEDIUM CVSS 6.5 Published 2026-11-06 Updated 2026-11-06

AI Risk Elevated (56/100) Active Exploit: No strong signal Published Exploit: No public exploit references Priority: P3 Priority

Severity Band MEDIUM

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

Affected Components 1

Reference Links 10

AI Risk Engine Elevated (56/100)

Exploitability Medium

Active Exploitation No strong signal

Published Exploit Status No public exploit references

Threat Timeline

2026-11-06 CVE published and first recorded in the threat feed.
2026-11-06 Record updated with latest vulnerability metadata.
2026-11-08 AI technical context refreshed for mitigation and impact guidance.
Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated 4 days ago

AI enriched 4 days ago (2026-11-08 17:41 UTC)

Technical Summary

Potential Impact

Severity is MEDIUM (CVSS 6.5). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as Medium based on severity and technical exposure profile.

Primary risk drivers: severity and technical exposure profile

Mitigation Recommendations

Validate affected product versions, prioritize patching, and monitor references for vendor remediation guidance. If immediate patching is not possible, apply compensating controls and limit exposure of vulnerable surfaces.

Detection & Monitoring

Track authentication anomalies, unexpected file writes, and suspicious plugin API activity around affected components.

Business Impact Lens

AI risk score 56/100 (Elevated, Medium) with priority P3 Priority. Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

Everest Forms PLUGIN · everest-forms Affected: <= 3.6.2 Fixed version not specified

References

What to do about this

Patch on your next cycle Worth fixing, but not ahead of other work.

Fix it

Update Everest Forms to the latest available version.

Where the vendor has not published a fix yet, disable the plugin until they do.

No Hack Halt control meaningfully contains this one — updating is the remedy. We would rather say so than sell you something that will not help.

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