CVE-2026-4327

{"id": "CVE-2026-4327", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-4327", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-19T13:23:25.810413Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@wordfence.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security@wordfence.com", "affectedData": [{"vendor": "sebwordpress", "product": "The Welcomizer", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "2.8.1"}], "defaultStatus": "unaffected"}]}], "published": "2026-09-19T08:16:53.887", "references": [{"url": "https://plugins.trac.wordpress.org/browser/the-welcomizer/tags/2.8.1/includes/twiz.menu.class.php#L265", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/the-welcomizer/tags/2.8.1/includes/twiz.menu.class.php#L507", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/the-welcomizer/tags/2.8.1/includes/twiz.menu.class.php#L580", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/the-welcomizer/tags/2.8.1/includes/twiz.output.class.php#L828", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/the-welcomizer/tags/2.8.1/twiz-ajax.php#L148", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/the-welcomizer/trunk/includes/twiz.menu.class.php#L265", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/the-welcomizer/trunk/includes/twiz.menu.class.php#L507", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/the-welcomizer/trunk/includes/twiz.menu.class.php#L580", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/the-welcomizer/trunk/includes/twiz.output.class.php#L828", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/the-welcomizer/trunk/twiz-ajax.php#L148", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/log/the-welcomizer/", "source": "security@wordfence.com"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/73fb7102-66ff-4309-a98f-bbbfd3ddbba6?source=cve", "source": "security@wordfence.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security@wordfence.com", "description": [{"lang": "en", "value": "CWE-94"}]}], "descriptions": [{"lang": "en", "value": "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'."}], "lastModified": "2026-09-21T13:33:33.387", "sourceIdentifier": "security@wordfence.com"}