CVE-2026-4327
The The Welcomizer plugin for WordPress is vulnerable to Remote Code Execution in all versions up to and including 2.8.1.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.68%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The The Welcomizer plugin for WordPress is vulnerable to Remote Code Execution in all versions up to and including 2.8.1. This is due to missing authorization checks on the twiz_ajax_callback AJAX action's 'savesection' handler combined with the use of eval() to execute user-supplied 'custom logic' code on the frontend. The AJAX handler at twiz-ajax.php verifies a nonce but performs no current_user_can() capability check for the ACTION_SAVE_SECTION case. Furthermore, the nonce is exposed to any authenticated user through the directly-accessible twiz-ajax.js.php file which loads WordPress and outputs the nonce. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary PHP code via the twiz_custom_logic POST parameter when saving a section with output choice 'twiz_logic_output'.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.68% probability · 52th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-94
- Source
- security@wordfence.com
EPSS 0.7% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://plugins.trac.wordpress.org/browser/the-welcomizer/tags/2.8.1/includes/twiz.menu.class.php#L265
- https://plugins.trac.wordpress.org/browser/the-welcomizer/tags/2.8.1/includes/twiz.menu.class.php#L507
- https://plugins.trac.wordpress.org/browser/the-welcomizer/tags/2.8.1/includes/twiz.menu.class.php#L580
- https://plugins.trac.wordpress.org/browser/the-welcomizer/tags/2.8.1/includes/twiz.output.class.php#L828
- https://plugins.trac.wordpress.org/browser/the-welcomizer/tags/2.8.1/twiz-ajax.php#L148
- https://plugins.trac.wordpress.org/browser/the-welcomizer/trunk/includes/twiz.menu.class.php#L265
- https://plugins.trac.wordpress.org/browser/the-welcomizer/trunk/includes/twiz.menu.class.php#L507
- https://plugins.trac.wordpress.org/browser/the-welcomizer/trunk/includes/twiz.menu.class.php#L580
- https://plugins.trac.wordpress.org/browser/the-welcomizer/trunk/includes/twiz.output.class.php#L828
- https://plugins.trac.wordpress.org/browser/the-welcomizer/trunk/twiz-ajax.php#L148
- https://plugins.trac.wordpress.org/log/the-welcomizer/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/73fb7102-66ff-4309-a98f-bbbfd3ddbba6?source=cve
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.