EUVD-2026-53898
GHSA-j85x-v49j-fphr
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Contributor authentication (PR:L) and admin interaction (UI:R) are required; XSS scope change justifies S:C/C:L/I:L, but availability impact is not applicable for XSS.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
1DescriptionCVE.org
Contributor Cross Site Scripting (XSS) in Ultimate Addons for Elementor <= 1.45.2 versions.
AnalysisAI
Stored Cross-Site Scripting in the Ultimate Addons for Elementor WordPress plugin (versions <= 1.45.2) allows authenticated contributors to inject persistent malicious scripts that execute in the browsers of higher-privileged users such as site administrators. The CVSS vector (PR:L/UI:R/S:C) confirms this is a contributor-level stored XSS with scope change - a low-privilege WordPress role can trigger execution in an admin's browsing context, enabling session hijacking or privilege escalation. No public exploit or KEV listing has been identified at time of analysis, but Patchstack has formally reported and documented this vulnerability.
Technical ContextAI
The affected product is the 'Ultimate Addons for Elementor' plugin by Brainstorm Force (CPE: cpe:2.3:a:brainstorm_force:ultimate_addons_for_elementor), a third-party add-on extending the Elementor page builder for WordPress. CWE-79 (Improper Neutralization of Input During Web Page Generation) indicates that contributor-supplied input - likely via a custom Elementor widget or block field - is insufficiently sanitized or escaped before being rendered in the WordPress front-end or admin area. The 'Contributor' role in WordPress is a registered but low-privilege account that can create draft posts but cannot publish without editor approval; however, Elementor-based content editing may bypass this trust boundary. The scope change (S:C) in the CVSS vector confirms output reaches a different security context, typically an admin or editor's browser session.
RemediationAI
The primary remediation is to update the Ultimate Addons for Elementor plugin beyond version 1.45.2 via the WordPress admin dashboard or WP-CLI (wp plugin update ultimate-elementor); consult the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/ultimate-elementor/vulnerability/wordpress-ultimate-addons-for-elementor-plugin-1-45-2-cross-site-scripting-xss-vulnerability for the confirmed fixed version once published. If an immediate update is not possible, a targeted compensating control is to revoke or eliminate all Contributor-role accounts that are not operationally necessary, since the vulnerability requires that privilege level to exploit. Additionally, a Web Application Firewall (WAF) rule blocking common XSS payloads in Elementor widget fields can reduce exploitability at the cost of potential false positives on legitimate rich-text content. Note that a patched version number is not independently confirmed from the provided data; verify with the Brainstorm Force changelog before updating in production.
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External POC / Exploit Code
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