Security Advisory

CVE-2026-49210

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-17 16:09:17

Last updated 2026-07-17 16:52:59

Assigner GitHub_M

CVSS score 2.3

State PUBLISHED

Description

Symfony UX is a JavaScript ecosystem for Symfony. From 2.8.0 until 2.36.0 and 3.1.0, Symfony\UX\LiveComponent\Util\ChildComponentPartialRenderer::createHtml() interpolates the client-controlled children[id].tag value from LiveComponentSubscriber and InterceptChildComponentRenderSubscriber directly into HTML as a tag name without escaping or validation, allowing arbitrary HTML, including <script> tags, on any Live Component re-render that contains at least one child component. This issue is fixed in versions 2.36.0 and 3.1.0.

← Browse all CVEs View on cve.org ↗