Vulnerability-Lookup

CVE-2025-47946 (GCVE-0-2025-47946)

Vulnerability from cvelistv5 – Published: 2025-05-19 19:25 – Updated: 2025-05-20 13:01

Title

symfony/ux-live-component and symfony/ux-twig-component vulnerable to unsanitized HTML attribute injection via ComponentAttributes

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.

Severity ?

6.1 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M

References

URL

Tags

	https://github.com/symfony/ux/security/advisories…	x_refsource_CONFIRM
	https://github.com/symfony/ux/commit/b5d1c85995c1…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	symfony	ux	Affected: < 2.25.1

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2025-47946",
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          "name": "https://github.com/symfony/ux/security/advisories/GHSA-5j3w-5pcr-f8hg",
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        {
          "name": "https://github.com/symfony/ux/commit/b5d1c85995c128cb926d47a96cfbfbd500b643a8",
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          "url": "https://github.com/symfony/ux/commit/b5d1c85995c128cb926d47a96cfbfbd500b643a8"
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      "source": {
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        "discovery": "UNKNOWN"
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      "title": "symfony/ux-live-component and symfony/ux-twig-component vulnerable to unsanitized HTML attribute injection via ComponentAttributes"
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GHSA-5J3W-5PCR-F8HG

Vulnerability from github – Published: 2025-05-19 22:24 – Updated: 2025-08-29 21:08

Summary

Symfony UX allows unsanitized HTML attribute injection via ComponentAttributes

Details

Impact

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.

Patches

The issue is fixed in version 2.25.1 of symfony/ux-twig-component by using Twig's EscaperRuntime to properly escape HTML attributes in ComponentAttributes. If you use symfony/ux-live-component, you must also update it to 2.25.1 to benefit from the fix, as it reuses the ComponentAttributes class internally.

Workarounds

Until you can upgrade, avoid rendering {{ attributes }} or derived objects directly if it may contain untrusted values. Instead, use {{ attributes.render('name') }} for safe output of individual attributes.

References

GitHub repository: symfony/ux

Severity ?

6.1 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/ux-twig-component"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.25.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "symfony/ux-live-component"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.25.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-47946"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-05-19T22:24:45Z",
    "nvd_published_at": "2025-05-19T20:15:26Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nRendering `{{ 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.\n\n### Patches\n\nThe issue is fixed in version `2.25.1` of `symfony/ux-twig-component` by using Twig\u0027s `EscaperRuntime` to properly escape HTML attributes in `ComponentAttributes`.  If you use `symfony/ux-live-component`, you must also update it to `2.25.1` to benefit from the fix, as it reuses the `ComponentAttributes` class internally.\n\n### Workarounds\n\nUntil you can upgrade, avoid rendering `{{ attributes }}` or derived objects directly if it may contain untrusted values.\nInstead, use `{{ attributes.render(\u0027name\u0027) }}` for safe output of individual attributes.\n\n### References\n\nGitHub repository: [symfony/ux](https://github.com/symfony/ux)",
  "id": "GHSA-5j3w-5pcr-f8hg",
  "modified": "2025-08-29T21:08:41Z",
  "published": "2025-05-19T22:24:45Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/symfony/ux/security/advisories/GHSA-5j3w-5pcr-f8hg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-47946"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/ux-live-component/commit/7ad44cf56d750b9f56658ed986286a10da132ee7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/ux-twig-component/commit/b5d4e77db69315aeb18d2238e0e7c943d340ce76"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/ux/commit/b5d1c85995c128cb926d47a96cfbfbd500b643a8"
    },
    {
      "type": "WEB",
      "url": "https://github.com/symfony/ux/commit/c2f7738ee0969c31df7514025a7f5fc6e153932d"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/ux-live-component/CVE-2025-47946.yaml"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/ux-twig-component/CVE-2025-47946.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/symfony/ux"
    },
    {
      "type": "WEB",
      "url": "https://symfony.com/blog/symfony-ux-cve-2025-47946-unsanitized-html-attribute-injection-via-componentattributes"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Symfony UX allows unsanitized HTML attribute injection via ComponentAttributes"
}

FKIE_CVE-2025-47946

Vulnerability from fkie_nvd - Published: 2025-05-19 20:15 - Updated: 2025-05-21 20:25

Severity ?

6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/symfony/ux/commit/b5d1c85995c128cb926d47a96cfbfbd500b643a8
	security-advisories@github.com	https://github.com/symfony/ux/security/advisories/GHSA-5j3w-5pcr-f8hg

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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.\nInstead, use `{{ attributes.render(\u0027name\u0027) }}` for safe output of individual attributes."
    },
    {
      "lang": "es",
      "value": "Symfony UX es una iniciativa y un conjunto de librer\u00edas para integrar herramientas de JavaScript en aplicaciones. Antes de la versi\u00f3n 2.25.1, renderizar `{{ atributos }}` o usar cualquier m\u00e9todo que devuelva una instancia de `ComponentAttributes` (por ejemplo, `only()`, `defaults()`, `without()`) genera valores de atributos directamente sin escapar. Si estos valores no son seguros (por ejemplo, contienen entrada del usuario), esto puede llevar a la inyecci\u00f3n de atributos HTML y vulnerabilidades XSS. El problema se solucion\u00f3 en la versi\u00f3n `2.25.1` de `symfony/ux-twig-component` Aquellos que usan `symfony/ux-live-component` tambi\u00e9n deben actualizarlo a `2.25.1` para beneficiarse de la correcci\u00f3n, ya que reutiliza la clase `ComponentAttributes` internamente. Como workaround, evite renderizar `{{ atributos }}` u objetos derivados directamente si puede contener valores no confiables. En su lugar, utilice `{{attributes.render(\u0027name\u0027) }}` para una salida segura de atributos individuales."
    }
  ],
  "id": "CVE-2025-47946",
  "lastModified": "2025-05-21T20:25:16.407",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-05-19T20:15:26.150",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/symfony/ux/commit/b5d1c85995c128cb926d47a96cfbfbd500b643a8"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/symfony/ux/security/advisories/GHSA-5j3w-5pcr-f8hg"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2025-47946 (GCVE-0-2025-47946)

GHSA-5J3W-5PCR-F8HG

Impact

Patches

Workarounds

References

FKIE_CVE-2025-47946

Tags

Sightings

Nomenclature