EUVD-2026-43160
GHSA-3pm3-fg5f-vgvx
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-reachable with low complexity and no user interaction, but a Contributor-level account is required (PR:L); admin takeover yields full C/I/A impact with unchanged scope.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
2DescriptionCVE.org
The Essential Addons for Elementor - Popular Elementor Templates & Widgets plugin for WordPress is vulnerable to Authenticated Account Takeover via Email Header Injection in all versions up to, and including, 6.6.10 This is due to insufficient server-side validation of a Login/Register widget setting used to construct outgoing email headers - the allowed-values restriction is enforced only in the client-side editor UI and not on the server, and the applied sanitization does not strip or encode CR/LF characters, allowing CRLF sequences stored in that setting to survive into raw mail headers. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject an additional Bcc header into the WordPress administrator's password-reset notification email, receive a copy of a valid administrator password-reset link, and achieve full administrator account takeover.
Articles & Coverage 1
AnalysisAI
Authenticated account takeover in the Essential Addons for Elementor WordPress plugin (versions ≤ 6.6.10) lets a Contributor-or-above user inject a Bcc header into WordPress's administrator password-reset email via the plugin's Login/Register widget, capturing a valid admin reset link and seizing the site. The flaw stems from an email-header (CRLF) injection where the allowed-values check is enforced only in the browser editor, not server-side. No public exploit has been identified at time of analysis, and it is not listed in CISA KEV; the vendor fixed it in version 6.6.11.
Technical ContextAI
The affected component is the Login/Register widget of Essential Addons for Elementor (CPE cpe:2.3:a:wpdevteam:essential_addons_for_elementor_-_popular_elementor_templates_&_widgets), a widget suite for the Elementor page builder on WordPress. The vulnerability is rooted in CWE-640 (Weak Password Recovery Mechanism for Forgotten Password), realized here through classic CRLF/email header injection: a widget setting that feeds into outgoing mail headers (see includes/Traits/Login_Registration.php and includes/Elements/Login_Register.php in the 6.6.10 source) is validated for allowed values only in the client-side editor, while the server-side sanitizer does not strip or encode carriage-return/line-feed characters. Because WordPress's wp_mail() and the underlying PHPMailer construct raw headers from these values, embedded CR/LF sequences let an attacker terminate the intended header and append a new one (Bcc), diverting a copy of the password-reset notification.
RemediationAI
Vendor-released patch: 6.6.11 - upgrade Essential Addons for Elementor to 6.6.11 or later, confirmed by the WordPress.org changeset diffing tag 6.6.10 against 6.6.11 (https://plugins.trac.wordpress.org/changeset?old_path=%2Fessential-addons-for-elementor-lite/tags/6.6.10&new_path=%2Fessential-addons-for-elementor-lite/tags/6.6.11 and the server-side fix in changeset 3601504 to includes/Traits/Login_Registration.php). If immediate patching is not possible, reduce exposure by removing or disabling any Login/Register widget instances that expose the affected setting, and tighten role assignments so untrusted users are not granted Contributor or higher (this limits who can author the malicious widget setting but does not fix the underlying header injection). As a compensating control, audit and restrict which accounts can edit Elementor content, and monitor for unexpected Bcc recipients on password-reset mail; review the Wordfence advisory above for signature-based virtual patching if a WAF is in use. Cross-reference the vendor advisory before relying on any workaround, as disabling the widget will break login/registration flows built on it.
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