CVE-2026-19802Network attack vector

Subscriber code execution via unchecked plugin installation

Published Sep 9, 2026 · Updated Sep 9, 2026

Authorization bypass in Checkout Custom Fields Builder for WooCommerce 1.1.5 and earlier allows remote authenticated users to install plugins. The Load class accepts the request's plugin parameter and invokes WordPress plugin installation and activation without checking the caller's capabilities. Subscriber-level access is sufficient when WooCommerce is inactive because the required nonce appears inline on subscriber-accessible admin pages.

CVSS severity4.3
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Checkout Custom Fields Builder for WooCommerce 1.1.5 and earlier allows remote authenticated users to install plugins. The Load class accepts the request's plugin parameter and invokes WordPress plugin installation and activation without checking the caller's capabilities. Subscriber-level access is sufficient when WooCommerce is inactive because the required nonce appears inline on subscriber-accessible admin pages.

The record

CVE
CVE-2026-19802
Published
Sep 9, 2026
Updated
Sep 9, 2026
Vendor
StylemixThemes
Product
Checkout Custom Fields Builder for WooCommerce
Classifications
CWE-862, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 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 <=1.1.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

StylemixThemes · Checkout Custom Fields Builder for WooCommerceversion=0 <=1.1.5

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
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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