Is CVE-2026-84251 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-84251 being exploited in the wild.

How severe is CVE-2026-84251?

Critical severity, with a CVSS score of 9.8, published 11 October 2026.

Which products and versions are affected?

Click5 CRM add-on to Ninja Forms through 1.0.1.

Is there a fix for CVE-2026-84251?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-84251 attacked?

It is attacked over the network.

Am I affected by CVE-2026-84251?

Check whether you run Click5 CRM add-on to Ninja Forms at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-84251: click5 CRM add-on to Ninja Forms unauthenticated option update

CVE-2026-84251 · Severity: critical · CVSS 9.8 · Published 2026-10-11

The click5 CRM add-on to Ninja Forms is a WordPress plugin that integrates customer relationship management with form-building tools. An unauthenticated attacker can change arbitrary website settings via an unprotected REST endpoint, enabling account takeover through creation of a malicious administrator account. No authentication or permission checks guard the vulnerable functionality, leaving all WordPress sites using this plugin through version 1.0.1 at immediate risk.

Vendors: Click5.

Quick answers

Is CVE-2026-84251 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-84251 being exploited in the wild.
How severe is CVE-2026-84251?: Critical severity, with a CVSS score of 9.8, published 11 October 2026.
Which products and versions are affected?: Click5 CRM add-on to Ninja Forms through 1.0.1.
Is there a fix for CVE-2026-84251?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-84251 attacked?: It is attacked over the network.
Am I affected by CVE-2026-84251?: Check whether you run Click5 CRM add-on to Ninja Forms at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The plugin lacks authorization and CSRF protection on its REST endpoint for updating options, and does not validate that options being modified belong to the plugin itself. Unauthenticated attackers on the network can update arbitrary WordPress blog options without authentication, including creation of new administrator accounts. No fix is currently available.

Affected products

click5 CRM add-on to Ninja Forms through 1.0.1

Timeline

2026-10-09: disclosed
2026-10-11: advisory

References

https://wpscan.com/vulnerability/db54e1a5-51bc-431d-9a9e-9fa3ac96a817/

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