CVE-2026-0673

Element Pack Addons for Elementor <= 8.3.15 - Unauthenticated SMTP Header Injection

2026-08-06 00:15
Drew Webber (mcdruid)

Strategic Overview

Status
Patched in 8.3.16
Affected Plugin
Element Pack Addons for Elementor – Elementor Widgets, Elementor Templates, Elementor Addons
Affected Version
<= 8.3.15
CVSS
5.3Medium
Weakness type
CWE-93 · Improper Neutralization of CRLF Sequences ('CRLF Injection')
CVE
CVE-2026-0673
View all Element Pack Addons for Elementor – Elementor Widgets, Elementor Templates, Elementor Addons vulnerabilities

At a glance

CVE-2026-0673 is a medium-severity Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in the Element Pack Addons for Elementor WordPress plugin, affecting versions <= 8.3.15. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 8.3.16; sites on affected versions should update now. Disclosed August 2026, reported by Drew Webber (mcdruid).

Vulnerability Overview

The Element Pack Addons for Elementor plugin for WordPress is vulnerable to Email Header Injection in all versions up to, and including, 8.3.15 via the `element_pack_contact_form` AJAX action. This is due to insufficient sanitization of newline characters in user-supplied input that gets concatenated into email headers. This makes it possible for unauthenticated attackers to inject arbitrary email headers into emails sent by the contact form.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')

The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.

Remediation

Update to version 8.3.16, or a newer patched version

How WordSec helps

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Element Pack Addons for Elementor 8.3.16 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-0673https://www.wordfence.com/threat-intel/vulnerabilities/id/941d0647-5027-4642-88fc-3ab26acbb639https://nvd.nist.gov/vuln/detail/CVE-2026-0673

Related records

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