CVE-2026-4326Network attack vector

Authenticated plugin installation via nonterminating capability check

Published Apr 9, 2026 · Updated Apr 9, 2026

Missing authorization in Webilia Vertex Addons for Elementor 1.6.4 and earlier allows remote authenticated users to install and activate plugins. The activate_required_plugins() handler records a failed install_plugins capability check but continues installation and activation before returning the error. Subscriber-level access is sufficient, allowing a low-privileged account to change site behavior through unauthorized active plugins.

CVSS severity8.8
High
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Webilia Vertex Addons for Elementor 1.6.4 and earlier allows remote authenticated users to install and activate plugins. The activate_required_plugins() handler records a failed install_plugins capability check but continues installation and activation before returning the error. Subscriber-level access is sufficient, allowing a low-privileged account to change site behavior through unauthorized active plugins.

The record

CVE
CVE-2026-4326
Published
Apr 9, 2026
Updated
Apr 9, 2026
Vendor
Webilia
Product
Vertex Addons for Elementor
Classifications
CWE-862, T1505
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 9, 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 <=1.6.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Webilia · Vertex Addons for Elementorversion=0 <=1.6.4

Published CVSS scores

8.8WordfenceCVSS:3.1/AV:N/AC:L/PR:L/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1505Server Software Component

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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