Symfony UX is an initiative and set of libraries to integrate JavaScript tools into applications. Prior to version 2.25.1, 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. The issue is fixed in version `2.25.1` of `symfony/ux-twig-component` Those who use `symfony/ux-live-component` must also update it to `2.25.1` to benefit from the fix, as it reuses the `ComponentAttributes` class internally. As a workaround, avoid rendering `{{ attributes }}` or derived objects directly if it may contain untrusted values.
Instead, use `{{ attributes.render('name') }}` for safe output of individual attributes.
CVSS
No CVSS.
References
Configurations
No configuration.
History
19 May 2025, 20:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-05-19 20:15
Updated : 2025-05-19 20:15
NVD link : CVE-2025-47946
Mitre link : CVE-2025-47946
JSON object : View
Products Affected
No product.
CWE
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')