CVE-2026-19220Public exploitNetwork attack vector

Unauthenticated site creation via unchecked registration policy

Published Aug 26, 2026 · Updated Aug 26, 2026

Privilege escalation in WPMU DEV Forminator Forms before 1.57.1 allows remote attackers to create a multisite site with administrator access. The registration-form submission path queues a site signup without checking whether the network permits site creation. Exploitation requires WordPress multisite, user-account registration, a published User Registration template with site registration enabled, and email activation or administrator approval; the new account has no role on existing sites.

CVSS severity3.7
Low
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in WPMU DEV Forminator Forms before 1.57.1 allows remote attackers to create a multisite site with administrator access. The registration-form submission path queues a site signup without checking whether the network permits site creation. Exploitation requires WordPress multisite, user-account registration, a published User Registration template with site registration enabled, and email activation or administrator approval; the new account has no role on existing sites.

The record

CVE
CVE-2026-19220
Published
Aug 26, 2026
Updated
Aug 26, 2026
Vendor
WPMU DEV
Product
Forminator Forms
Classifications
CWE-269, T1136
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 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 <1.57.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WPMU DEV · Forminator Formsversion=0 <1.57.1

Published CVSS scores

3.7CISA ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1136Create Account

Public exploit references

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

Technologies

Your stack

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Your stack

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