CVE-2026-49216
Medium
Description
Symfony UX is a JavaScript ecosystem for Symfony. From 2.2.0 until 2.36.0 and 3.1.0, the Stimulus controller in symfony/ux-autocomplete renders AJAX response items in _createAutocompleteWithRemoteData() by interpolating the text field into HTML template literals (<div>${item[labelField]}</div>) rather than text, allowing attacker-controlled markup from user-supplied dropdown values to execute in the browser of any user who opens an autocomplete widget backed by the same data. This issue is fixed in versions 2.36.0 and 3.1.0.
SeverityMedium
CVSS5.4
Exploit probability—
Product
Symfony/ux-autocomplete
PublishedJul 17, 2026
First seenJul 17, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- symfony/ux-autocomplete2.36.0, 3.1.0 or later
- symfony ux2.36.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| symfony/ux-autocompletePackagist | 2.2.0 ≤ v < 2.36.0, 3.0.0 ≤ v < 3.1.0 | 2.36.0, 3.1.0 |
| symfony ux | 2.2.0 ≤ v < 2.36.0, 3.0.0 | 2.36.0 |
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