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CVE-2026-49216 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/symfony/ux/commit/842ae54bc74de389299f975f01aafae272cb0019	[email protected]	Patch
https://github.com/symfony/ux/releases/tag/v2.36.0	[email protected]	Release Notes
https://github.com/symfony/ux/releases/tag/v3.1.0	[email protected]	Release Notes
https://github.com/symfony/ux/security/advisories/GHSA-mwqm-4fw3-cjvr	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

Product	Versions
symfony ux	>= 2.2.0, < 2.36.0 3.0.0
CPE cpe:2.3:a:symfony:ux:::::::: cpe:2.3:a:symfony:ux:3.0.0:::::::* Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Jul 21, 2026	CVE Modified	CISA-ADP
Jul 20, 2026	Initial Analysis	[email protected]
Jul 17, 2026	New CVE Received	[email protected]