EUVD-2026-64300
GHSA-9gvr-wm3r-qgg4
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Checkout endpoint is network-accessible with no auth; integrity-only impact reflects direct financial fraud with no confidentiality or availability consequence.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
2DescriptionCVE.org
The 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.
AnalysisAI
Price integrity bypass in the Advanced Product Fields (Product Addons) for WooCommerce plugin allows unauthenticated shoppers to complete purchases at the base product price while receiving paid addons without charge, effectively constituting theft of digital or physical goods from merchants. Versions up to and including 1.6.21 are affected due to a logic flaw in the cart validation function; a partial patch was shipped in 1.6.19 but did not fully close the exposure. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No authentication is required - the attack targets the unauthenticated checkout flow (CVSS PR:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N correctly captures the threat profile: the attack requires no authentication, no special network position, and no user interaction, making it trivially automatable against any publicly accessible WooCommerce storefront running this plugin. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Store operators should update the Advanced Product Fields (Product Addons) for WooCommerce plugin immediately to a version beyond 1.6.21, as that is the last confirmed vulnerable release; operators should verify with the vendor or the WordPress plugin repository that the installed version incorporates both changesets 3477476 and 3483410, which represent the two-stage fix effort. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all WooCommerce installations to identify whether Advanced Product Fields (Product Addons) is installed and determine the active version number. …
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External POC / Exploit Code
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