TI-2025-30339 Aliases CVE-2025-47946 GHSA-5j3w-5pcr-f8hg

Cross-site scripting in symfony ux

LOW 27CWE-79Published 2025-05-19 · Updated 2025-05-20

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00252 16th percentileScored 2026-11-07

Fix Fixed ux (symfony): 2.25.1symfony/ux-twig-component (Packagist): 2.25.1+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
symfony	ux	before 2.25.1	2.25.1	Patch available	CNA
—	symfony/ux-twig-component (Packagist)	before 2.25.1	2.25.1	Patch available	GHSA-5j3w-5pcr-f8hg
—	symfony/ux-live-component (Packagist)	before 2.25.1	2.25.1	Patch available	GHSA-5j3w-5pcr-f8hg

ux Vendorsymfony Affected before 2.25.1 Fixed in 2.25.1 Patch available CNA
symfony/ux-twig-component (Packagist) Vendor— Affected before 2.25.1 Fixed in 2.25.1 Patch available GHSA-5j3w-5pcr-f8hg
symfony/ux-live-component (Packagist) Vendor— Affected before 2.25.1 Fixed in 2.25.1 Patch available GHSA-5j3w-5pcr-f8hg

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:symfony:ux::::::::	—	—	symfony

cpe:2.3:a:symfony:ux:*:*:*:*:*:*:*:* Versions — — ·symfony

Remediation

Fix · CNA ux (symfony) Fixed in 2.25.1
Fix · GHSA-5j3w-5pcr-f8hg symfony/ux-twig-component (Packagist) Fixed in 2.25.1 Advisory →
Fix · GHSA-5j3w-5pcr-f8hg symfony/ux-live-component (Packagist) Fixed in 2.25.1 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2025-47946
2026-10-03 Alias added: GHSA-5j3w-5pcr-f8hg

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2025-47946

Other 9

TI-2024-33775 Ability to change environment from query in symfony/runtime CVSS 3.1HIGH 7.3
TI-2026-34283 Twig: The `spaceless` filter implicitly marks its output as safe CVSS 4.0MEDIUM 5.1
TI-2022-07667 Code injection in Twig CVSS 3.1CRITICAL 9.8
TI-2018-10028 Twig before 2.4.4 allows Server-Side Template Injection (SSTI) via the search search_key… CVSS 3.0CRITICAL 9.8
TI-2026-35851 Incorrect authorization in symfony CVSS 4.0HIGH 8.7
TI-2026-35264 Improper input validation in symfony CVSS 4.0HIGH 8.3

See all 94 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences