CVE-2026-62080 in Happy Addons Plugin
Summary
by MITRE • 09/30/2026
Contributor Cross Site Scripting (XSS) in Happy Addons for Elementor <= 3.23.1 versions.
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Analysis
by VulDB Data Team • 09/30/2026
The vulnerability identified as a Contributor Cross-Site Scripting issue within Happy Addons for Elementor, affecting versions up to and including 3.23.1, represents a significant security flaw in the plugin's handling of user input from accounts with contributor-level permissions. This type of vulnerability falls under the broader category of Stored or Reflected Cross-Site Scripting, specifically mapped to CWE-79: Improper Neutralization of Input During Web Page Generation. The core technical flaw lies in the insufficient sanitization and validation of data submitted by users who have been granted limited editing privileges on WordPress sites utilizing this plugin. When a contributor attempts to create or modify content using Happy Addons widgets, the application fails to adequately escape special characters within user-supplied fields before rendering them back into the browser context. This oversight allows an attacker with low-privileged access to inject malicious JavaScript code that executes in the browsers of other users who view the affected content.
From a technical perspective, this vulnerability exploits the trust relationship between the web application and its end-users. By leveraging the contributor role, which is typically intended for non-administrative users such as writers or editors with restricted capabilities, an attacker can bypass higher-level security controls that might otherwise prevent script injection from administrators or authors. The malicious payload is often embedded within widget settings, post content, or custom fields managed by Happy Addons components. When a victim user loads the compromised page, their browser interprets the injected scripts as legitimate code originating from the trusted domain of the WordPress site. This execution environment enables the attacker to perform actions on behalf of the victim, such as stealing session cookies, capturing authentication tokens, performing unauthorized state changes, or redirecting users to malicious external sites designed for phishing attacks.
The operational impact of this vulnerability is substantial due to its potential for widespread exploitation and social engineering integration. Since contributors are common in multi-author WordPress environments, the attack surface is relatively large compared to vulnerabilities requiring administrator access. Successful exploitation can lead to account takeover if session cookies are stolen without proper HttpOnly or Secure flags configured on the server side. Furthermore, attackers may use this vector to deface websites by altering displayed content or install keyloggers and browser-based malware through drive-by download techniques facilitated by malicious scripts. The presence of such a vulnerability undermines user trust in the platform's security posture and can result in data breaches involving sensitive customer information processed through forms hosted on compromised pages.
Mitigation strategies must address both immediate remediation and long-term defensive measures. The primary solution is to upgrade Happy Addons for Elementor to version 3.24 or later, where this specific input validation flaw has been patched by the developers. Until an update can be applied, site administrators should consider restricting contributor-level access if possible, ensuring that only trusted individuals have editing privileges on sensitive sections of the website. Implementing a Web Application Firewall (WAF) with rules tuned to detect and block common XSS payloads can provide an additional layer of defense against exploitation attempts. Additionally, enforcing Content Security Policy headers across the WordPress installation helps mitigate the impact by restricting the sources from which scripts are allowed to execute, thereby neutralizing many inline script injection attacks even if they succeed in being stored or reflected on the page.
This vulnerability aligns with MITRE ATT&CK technique T1059: Command and Scripting Interpreter, specifically under sub-techniques involving JavaScript execution within a browser context. It also relates to T1189: Drive-by Compromise when used for malware distribution, and T1534: Internal Spearphishing if leveraged against internal users. Security teams should treat this issue with high priority due to the low barrier to entry required by attackers, who only need contributor-level access rather than full administrative control. Regular security audits of third-party plugins are essential to identify such flaws early in their lifecycle before they can be exploited at scale across thousands of WordPress installations worldwide.