CVE-2026-84251Network attack vector

Unauthenticated site takeover via unchecked REST options writes

Published Oct 11, 2026 · Updated Oct 11, 2026

Missing authorization in click5 CRM add-on to Ninja Forms 1.0.1 and earlier allows remote attackers to change options via REST requests. The options-update endpoint lacks authorization and CSRF checks and accepts options outside the add-on's settings. Unauthenticated access to this endpoint allows changes that enable creation of an administrator account and site takeover.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in click5 CRM add-on to Ninja Forms 1.0.1 and earlier allows remote attackers to change options via REST requests. The options-update endpoint lacks authorization and CSRF checks and accepts options outside the add-on's settings. Unauthenticated access to this endpoint allows changes that enable creation of an administrator account and site takeover.

The record

CVE
CVE-2026-84251
Published
Oct 11, 2026
Updated
Oct 11, 2026
Vendor
click5 Interactive
Product
click5 CRM add-on to Ninja Forms
Classifications
CWE-352, CWE-862, T1136, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

click5 Interactive · click5 CRM add-on to Ninja Formsversion=0 <=1.0.1

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
CWE-862Missing Authorization
T1136Create Account
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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