CVE-2026-19802 json
Checkout Custom Fields Builder for WooCommerce <= 1.1.5 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Plugin Installation via 'plugin' Parameter
published 2026-09-09 2 mo ago modified 2026-09-09 1 mo ago also EUVD-2026-74726
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 49%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 1 mo ago
Exploit prediction
0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Affected products
- stylemix Checkout Custom Fields Builder for WooCommerce
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/6d780de5-d333-4af9-b9d8-0d6c8254dd05?source=cve
- plugins.trac.wordpress.org /browser/checkout-custom-fields-builder-for-woocommerce/tags/1.1.4/includes/Load.php#L195
- plugins.trac.wordpress.org /browser/checkout-custom-fields-builder-for-woocommerce/tags/1.1.4/includes/Load.php#L168
- plugins.trac.wordpress.org /browser/checkout-custom-fields-builder-for-woocommerce/tags/1.1.4/includes/Load.php#L47
- plugins.trac.wordpress.org /browser/checkout-custom-fields-builder-for-woocommerce/tags/1.1.4/includes/Load.php#L150
- plugins.trac.wordpress.org /changeset?reponame=&old=3678996%40checkout-custom-fields-builder-for-woocommerce&new=3678996%40checkout-custo
Sources
- CVE List CVE-2026-19802
- NVD CVE-2026-19802
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.