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SCA: security update for symfony/ux-live-component (GHSA-38x5-rcv4-xf7x)

low Tenable Self-Hosted Container Security Plugin ID 443630

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-49210)

Solution

Update the symfony/ux-live-component library and its related packages to version 2.36.0 or later.

See Also

https://github.com/advisories/GHSA-38x5-rcv4-xf7x

Plugin Details

Severity: Low

ID: 443630

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 6/20/2026

Updated: 7/21/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 2.3

Percentile: 9.62

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2026-49210

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Low

Base Score: 2.3

Threat Score: 0.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/19/2026

Vulnerability Publication Date: 6/19/2026

Reference Information

CVE: CVE-2026-49210

cwe: CWE-79