Advanced Product Fields (Product Addons) for WooCommerce <= 1.6.21 - Unauthenticated Improper Input Validation to Price Bypass via Add-to-Cart POST Request

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-2996
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-22 14:16:32 UTC
Updated2026-08-24 16:41:13 UTC
DescriptionThe Advanced Product Fields (Product Addons) for WooCommerce plugin for WordPress is vulnerable to Improper Input Validation in all versions up to, and including, 1.6.21. This is due to a logic flaw in the 'validate_cart_data' function. This makes it possible for unauthenticated attackers to bypass required paid addons and complete purchases at the base product price only, effectively stealing products by paying a fraction of the intended total. The vulnerability was partially patched in version 1.6.19.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

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

EPSS: 0.004900000 probability, percentile 0.399210000 (date 2026-08-25)

Problem Types: CWE-20 | CWE-20 CWE-20 Improper Input Validation

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Maartenbelmans Advanced Product Fields Product Addons For WooCommerce affected 1.6.21 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/changeset/3477476 [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/5d9c1c3d-6882-4425-8d32-bdb57... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/advanced-product-fields-for-woocommerce/trunk/include... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3483410 [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: Andrés Cruciani (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-02-23T01:08:22.000ZVendor Notified
CNA2026-08-21T00:00:00.000ZDisclosed

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