Checkout Custom Fields Builder for WooCommerce <= 1.1.5 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Plugin Installation via 'plugin' Parameter

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-19802
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-09 07:16:56 UTC
Updated2026-09-09 07:16:56 UTC
DescriptionThe Checkout Custom Fields Builder for WooCommerce plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.1.5. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to install and activate an arbitrary attacker-hosted plugin, resulting in remote code execution on the server. The required nonce is emitted inline on all admin pages accessible to subscribers when WooCommerce is inactive, meaning any subscriber-level user can harvest it and trigger the exploit without any additional privileges.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Stylemix Checkout Custom Fields Builder For WooCommerce affected 1.1.5 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/checkout-custom-fields-builder-for-woocommerce/tags/1... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/checkout-custom-fields-builder-for-woocommerce/tags/1... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/checkout-custom-fields-builder-for-woocommerce/tags/1... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/checkout-custom-fields-builder-for-woocommerce/tags/1... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/6d780de5-d333-4af9-b9d8-0d6c8... [email protected] www.wordfence.com
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Nabil Irawan (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-08-13T20:42:21.000ZVendor Notified
CNA2026-09-08T18:37:40.000ZDisclosed

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