CVE-2026-84254Network attack vector

Unauthenticated takeover via unchecked REST option updates

Published Oct 11, 2026 · Updated Oct 11, 2026

Missing authorization in click5 CRM add-on to Contact Form 7 1.0.4 and earlier allows remote attackers to change WordPress options. The REST option-update endpoint accepts arbitrary option names without authorization or CSRF checks and does not restrict writes to plugin-owned settings. With the plugin active and the endpoint reachable, attackers can change site options to create an administrator account and take over the site without credentials.

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

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Get started

Summary

What happened

Missing authorization in click5 CRM add-on to Contact Form 7 1.0.4 and earlier allows remote attackers to change WordPress options. The REST option-update endpoint accepts arbitrary option names without authorization or CSRF checks and does not restrict writes to plugin-owned settings. With the plugin active and the endpoint reachable, attackers can change site options to create an administrator account and take over the site without credentials.

The record

CVE
CVE-2026-84254
Published
Oct 11, 2026
Updated
Oct 11, 2026
Vendor
click5 Interactive
Product
click5 CRM add-on to Contact Form 7
Classifications
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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <=1.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

click5 Interactive · click5 CRM add-on to Contact Form 7version=0 <=1.0.4

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

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Get started to see how Hinoki identifies affected software and validates exploitability in your environment.

Get started