CVE-2026-19221Network attack vector

Administrator network-wide code execution via unrestricted Hub key

Published Aug 22, 2026 · Updated Aug 22, 2026

Code injection in WPMU DEV Forminator Forms before 1.57.0.5 allows remote authenticated users to execute code across a multisite network. The Hub Connector API-key setting accepts network-wide changes from an ordinary site administrator without enforcing network-administrator authorization. Reachability requires WordPress Multisite and administrator access to one member site; successful abuse compromises every site in the network.

CVSS severity7.2
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in WPMU DEV Forminator Forms before 1.57.0.5 allows remote authenticated users to execute code across a multisite network. The Hub Connector API-key setting accepts network-wide changes from an ordinary site administrator without enforcing network-administrator authorization. Reachability requires WordPress Multisite and administrator access to one member site; successful abuse compromises every site in the network.

The record

CVE
CVE-2026-19221
Published
Aug 22, 2026
Updated
Aug 22, 2026
Vendor
WPMU DEV
Product
Forminator Forms
Classifications
CWE-94, T1068
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 22, 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=1.40.0 <1.57.0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

WPMU DEV · Forminator Formsversion=1.40.0 <1.57.0.5

Published CVSS scores

7.2CISA ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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.

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

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1068Exploitation for Privilege Escalation

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

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Your stack

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