Cross-site Scripting (XSS)

Overview symfony/ux-twig-component is a Twig components for Symfony Affected versions of this package are vulnerable to Cross-site Scripting XSS via the ComponentAttributes class. An attacker can manipulate HTML attribute outputs and potentially execute scripts in the context of the affected web...

GHSA-5J3W-5PCR-F8HG Symfony UX allows unsanitized HTML attribute injection via ComponentAttributes

Impact Rendering attributes or using any method that returns a ComponentAttributes instance e.g. only, defaults, without ouputs attribute values directly without escaping. If these values are unsafe e.g. contain user input, this can lead to HTML attribute injection and XSS vulnerabilities. Patche...

symfony/ux-twig-component Unsanitized HTML attribute injection via ComponentAttributes

More info at https://symfony.com/blog/symfony-ux-cve-2025-47946-unsanitized-html-attribute-injection-via-componentattributes...