Improved code security enforcement

Patched stored XSS vulnerabilities in the REST API request handling and Lightbox component, and fixed a missing authorization check in AI image uploads. Users without the unfiltered_html capability could previously inject malicious scripts via Elementor post data or crafted lightbox content. All three issues are resolved by enforcing proper input sanitization and permission verification.

This vulnerability affects the following application versions:

• Elementor Website Builder 3.18.0
• Elementor Website Builder 3.18.0-beta3
• Elementor Website Builder 3.18.0-beta4
• Elementor Website Builder 3.18.0-dev3
• Elementor Website Builder 3.18.0-dev4
• Elementor Website Builder 3.18.1
• Elementor Website Builder 3.18.2
• Elementor Website Builder 3.18.3
• Elementor Website Builder 3.19.0
• Elementor Website Builder 3.19.0-beta1
• Elementor Website Builder 3.19.0-beta2
• Elementor Website Builder 3.19.0-beta3
• Elementor Website Builder 3.19.0-beta4
• Elementor Website Builder 3.19.0-beta5
• Elementor Website Builder 3.19.0-beta6
• Elementor Website Builder 3.19.0-dev1
• Elementor Website Builder 3.19.0-dev2
• Elementor Website Builder 3.19.0-dev3
• Elementor Website Builder 3.19.0-dev4
• Elementor Website Builder 3.19.0-dev5
• Elementor Website Builder 3.19.0-dev6
• Elementor Website Builder 3.19.1
• Elementor Website Builder 3.19.2
• Elementor Website Builder 3.19.3
• Elementor Website Builder 3.19.4
• Elementor Website Builder 3.20.0
• Elementor Website Builder 3.20.0-beta1
• Elementor Website Builder 3.20.0-beta2
• Elementor Website Builder 3.20.0-beta3
• Elementor Website Builder 3.20.0-beta4
• Elementor Website Builder 3.20.0-dev1
• Elementor Website Builder 3.20.0-dev2
• Elementor Website Builder 3.20.0-dev3
• Elementor Website Builder 3.20.0-dev4
• Elementor Website Builder 3.20.1
• Elementor Website Builder 3.20.2
• Elementor Website Builder 3.20.3
• Elementor Website Builder 3.20.4
• Elementor Website Builder 3.21.0
• Elementor Website Builder 3.21.0-beta1
• Elementor Website Builder 3.21.0-beta2
• Elementor Website Builder 3.21.0-beta3
• Elementor Website Builder 3.21.0-dev1
• Elementor Website Builder 3.21.0-dev2
• Elementor Website Builder 3.21.0-dev3
• Elementor Website Builder 3.21.1
• Elementor Website Builder 3.21.2
• Elementor Website Builder 3.21.3
• Elementor Website Builder 3.21.4
• Elementor Website Builder 3.21.5
• Elementor Website Builder 3.21.6
• Elementor Website Builder 3.21.7
• Elementor Website Builder 3.21.8
• Elementor Website Builder 3.22.0
• Elementor Website Builder 3.22.0-beta1
• Elementor Website Builder 3.22.0-beta2
• Elementor Website Builder 3.22.0-beta3
• Elementor Website Builder 3.22.0-beta4
• Elementor Website Builder 3.22.0-beta5
• Elementor Website Builder 3.22.0-beta6
• Elementor Website Builder 3.22.0-dev1
• Elementor Website Builder 3.22.0-dev2
• Elementor Website Builder 3.22.0-dev3
• Elementor Website Builder 3.22.0-dev4
• Elementor Website Builder 3.22.0-dev5
• Elementor Website Builder 3.22.0-dev6
• Elementor Website Builder 3.22.1
• Elementor Website Builder 3.22.2
• Elementor Website Builder 3.22.3
• Elementor Website Builder 3.23.0
• Elementor Website Builder 3.23.0-beta1
• Elementor Website Builder 3.23.0-beta2
• Elementor Website Builder 3.23.0-beta3
• Elementor Website Builder 3.23.0-beta4
• Elementor Website Builder 3.23.0-beta5
• Elementor Website Builder 3.23.0-beta6
• Elementor Website Builder 3.23.0-dev1
• Elementor Website Builder 3.23.0-dev2
• Elementor Website Builder 3.23.0-dev3
• Elementor Website Builder 3.23.0-dev4
• Elementor Website Builder 3.23.0-dev5
• Elementor Website Builder 3.23.0-dev6
• Elementor Website Builder 3.23.1
• Elementor Website Builder 3.23.2
• Elementor Website Builder 3.23.3
• Elementor Website Builder 3.23.4
• Elementor Website Builder 3.24.0
• Elementor Website Builder 3.24.0-beta1
• Elementor Website Builder 3.24.0-beta2
• Elementor Website Builder 3.24.0-beta3
• Elementor Website Builder 3.24.0-dev1
• Elementor Website Builder 3.24.0-dev2
• Elementor Website Builder 3.24.0-dev3
• Elementor Website Builder 3.24.1
• Elementor Website Builder 3.24.2
• Elementor Website Builder 3.24.3
• Elementor Website Builder 3.24.4
• Elementor Website Builder 3.24.5
• Elementor Website Builder 3.24.6
• Elementor Website Builder 3.24.7
• Elementor Website Builder 3.24.8
• Elementor Website Builder 3.25.0
• Elementor Website Builder 3.25.0-beta1
• Elementor Website Builder 3.25.0-beta2
• Elementor Website Builder 3.25.0-beta3
• Elementor Website Builder 3.25.0-dev1
• Elementor Website Builder 3.25.0-dev2
• Elementor Website Builder 3.25.0-dev3
• Elementor Website Builder 3.25.1
• Elementor Website Builder 3.25.2
• Elementor Website Builder 3.25.3
• Elementor Website Builder 3.25.4
• Elementor Website Builder 3.25.5
• Elementor Website Builder 3.25.6
• Elementor Website Builder 3.25.7
• Elementor Website Builder 3.25.8
• Elementor Website Builder 3.25.9
• Elementor Website Builder 3.25.10
• Elementor Website Builder 3.25.11
• Elementor Website Builder 3.26.0
• Elementor Website Builder 3.26.0-beta1
• Elementor Website Builder 3.26.0-beta2
• Elementor Website Builder 3.26.0-beta3
• Elementor Website Builder 3.26.0-beta4
• Elementor Website Builder 3.26.0-beta5
• Elementor Website Builder 3.26.0-dev1
• Elementor Website Builder 3.26.0-dev2
• Elementor Website Builder 3.26.0-dev3
• Elementor Website Builder 3.26.0-dev4
• Elementor Website Builder 3.26.0-dev5
• Elementor Website Builder 3.26.1
• Elementor Website Builder 3.26.2
• Elementor Website Builder 3.26.3
• Elementor Website Builder 3.26.4
• Elementor Website Builder 3.26.5
• Elementor Website Builder 3.27.0
• Elementor Website Builder 3.27.0-beta1
• Elementor Website Builder 3.27.0-beta2
• Elementor Website Builder 3.27.0-dev1
• Elementor Website Builder 3.27.0-dev2
• Elementor Website Builder 3.27.1
• Elementor Website Builder 3.27.2
• Elementor Website Builder 3.27.3
• Elementor Website Builder 3.27.4
• Elementor Website Builder 3.27.5
• Elementor Website Builder 3.27.6
• Elementor Website Builder 3.27.7
• Elementor Website Builder 3.28.0
• Elementor Website Builder 3.28.0-beta1
• Elementor Website Builder 3.28.0-beta2
• Elementor Website Builder 3.28.0-beta3
• Elementor Website Builder 3.28.0-dev1
• Elementor Website Builder 3.28.0-dev2
• Elementor Website Builder 3.28.0-dev3
• Elementor Website Builder 3.28.1
• Elementor Website Builder 3.28.2
• Elementor Website Builder 3.28.3
• Elementor Website Builder 3.28.4
• Elementor Website Builder 3.29.0
• Elementor Website Builder 3.29.0-beta1
• Elementor Website Builder 3.29.0-beta2
• Elementor Website Builder 3.29.0-beta3
• Elementor Website Builder 3.29.0-beta4
• Elementor Website Builder 3.29.0-dev1
• Elementor Website Builder 3.29.0-dev2
• Elementor Website Builder 3.29.0-dev3
• Elementor Website Builder 3.29.0-dev4
• Elementor Website Builder 3.29.1
• Elementor Website Builder 3.29.2
• Elementor Website Builder 3.30.0
• Elementor Website Builder 3.30.0-beta1
• Elementor Website Builder 3.30.0-beta2
• Elementor Website Builder 3.30.0-beta3
• Elementor Website Builder 3.30.0-dev1
• Elementor Website Builder 3.30.0-dev2
• Elementor Website Builder 3.30.0-dev3
• Elementor Website Builder 3.30.1
• Elementor Website Builder 3.30.2
• Elementor Website Builder 3.30.3
• Elementor Website Builder 3.30.4
• Elementor Website Builder 3.31.0
• Elementor Website Builder 3.31.0-beta1
• Elementor Website Builder 3.31.0-beta2
• Elementor Website Builder 3.31.0-dev1
• Elementor Website Builder 3.31.0-dev2
• Elementor Website Builder 3.31.1
• Elementor Website Builder 3.31.2
• Elementor Website Builder 3.31.3
• Elementor Website Builder 3.31.4
• Elementor Website Builder 3.31.5
• Elementor Website Builder 3.32.0
• Elementor Website Builder 3.32.0-beta1
• Elementor Website Builder 3.32.0-beta2
• Elementor Website Builder 3.32.0-beta3
• Elementor Website Builder 3.32.0-dev1
• Elementor Website Builder 3.32.0-dev2
• Elementor Website Builder 3.32.0-dev3
• Elementor Website Builder 3.32.1
• Elementor Website Builder 3.32.2
• Elementor Website Builder 3.32.3
• Elementor Website Builder 3.32.4
• Elementor Website Builder 3.32.5
• Elementor Website Builder 3.33.0
• Elementor Website Builder 3.33.0-beta1
• Elementor Website Builder 3.33.0-beta2
• Elementor Website Builder 3.33.0-beta3
• Elementor Website Builder 3.33.0-beta4
• Elementor Website Builder 3.33.0-dev1
• Elementor Website Builder 3.33.0-dev2
• Elementor Website Builder 3.33.0-dev3
• Elementor Website Builder 3.33.0-dev4
• Elementor Website Builder 3.33.1
• Elementor Website Builder 3.33.2
• Elementor Website Builder 3.33.3
• Elementor Website Builder 3.33.4
• Elementor Website Builder 3.33.5
• Elementor Website Builder 3.33.6
• Elementor Website Builder 3.34.0
• Elementor Website Builder 3.34.0-beta1
• Elementor Website Builder 3.34.0-beta2
• Elementor Website Builder 3.34.0-beta3
• Elementor Website Builder 3.34.0-dev1
• Elementor Website Builder 3.34.0-dev2
• Elementor Website Builder 3.34.1
• Elementor Website Builder 3.34.2
• Elementor Website Builder 3.34.3
• Elementor Website Builder 3.34.4
• Elementor Website Builder 3.35.0
• Elementor Website Builder 3.35.0-beta1
• Elementor Website Builder 3.35.0-beta2
• Elementor Website Builder 3.35.0-beta3
• Elementor Website Builder 3.35.0-beta4
• Elementor Website Builder 3.35.0-dev1
• Elementor Website Builder 3.35.0-dev2
• Elementor Website Builder 3.35.0-dev3
• Elementor Website Builder 3.35.0-dev4
• Elementor Website Builder 3.35.1
• Elementor Website Builder 3.35.2
• Elementor Website Builder 3.35.3
• Elementor Website Builder 3.35.4
• Elementor Website Builder 3.35.5