EUVD-2026-74726
GHSA-8225-xqqw-4vwj
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Subscriber auth (PR:L) suffices, but arbitrary plugin install achieves full server RCE with scope change beyond the plugin, yielding S:C/C:H/I:H/A:H.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
3DescriptionCVE.org
The 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.
AnalysisAI
Remote code execution via subscriber-level authorization bypass in the Checkout Custom Fields Builder for WooCommerce WordPress plugin (all versions ≤1.1.5) allows any authenticated subscriber to install an arbitrary attacker-hosted PHP plugin and achieve full server compromise. The plugin registers AJAX endpoints for plugin installation and activation without enforcing WordPress capability checks, and the required nonce is emitted directly into all admin pages visible to subscribers when WooCommerce is inactive - making the exploit trivially accessible to any registered user. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated WordPress subscriber-level account (PR:L) - not unauthenticated, as a valid WordPress session cookie is necessary. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The assigned CVSS 4.3 with I:L dramatically understates the actual impact - the described outcome is full server RCE via arbitrary plugin installation, which should carry C:H/I:H/A:H with scope change (S:C), yielding a score closer to 9.9. … 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 | Update the Checkout Custom Fields Builder for WooCommerce plugin to the version incorporating changeset 3678996, which patches the missing authorization checks in Load.php (https://plugins.trac.wordpress.org/changeset?reponame=&old=3678996%40checkout-custom-fields-builder-for-woocommerce&new=3678996%40checkout-custom-fields-builder-for-woocommerce). … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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