Prime Elementor Addons <= 1.3.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Widget HTML Tag Settings
Strategic Overview
- Status
- Patched in 1.3.4
- Affected Version
<= 1.3.3- CVSS
- 6.4Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2026-8677
At a glance
CVE-2026-8677 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Prime Elementor Addons WordPress plugin, affecting versions <= 1.3.3. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 1.3.4; sites on affected versions should update now. Disclosed June 2026, reported by Romain Deperne (ang3L).
Vulnerability Overview
The Prime Elementor Addons – Lightweight Elementor Widgets for Faster Pages plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Widget HTML Tag Settings in all versions up to, and including, 1.3.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploit succeeds even for users without the unfiltered_html capability because the payload (e.g., 'img src=x onerror=alert(document.domain)') contains no HTML angle brackets and therefore passes through Elementor's wp_kses_post() filter unchanged at save time.
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 interaction from a victim user.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Prime Elementor Addons <= 1.3.3 carries this weakness at wp_kses_post(), and reaching it takes an account at Contributor level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.
Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Prime Elementor Addons the fix is 1.3.4: builds <= 1.3.3 are affected, anything from 1.3.4 onward is not.
Remediation
Update to version 1.3.4, or a newer patched version
How does WordSec protect against this?
An attacker needs Contributor access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Prime Elementor Addons 1.3.4 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Other vulnerabilities in Prime Elementor Addons – Lightweight Elementor Widgets for Faster Pages
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C