{"id":"GHSA-5j3w-5pcr-f8hg","aliases":["CVE-2025-47946"],"title":"Symfony UX allows unsanitized HTML attribute injection via ComponentAttributes","description":"### 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'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.\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('name') }}` for safe output of individual attributes.\n\n### References\n\nGitHub repository: [symfony/ux](https://github.com/symfony/ux)","severity":"medium","score":6.1,"published":"2025-05-19T22:24:45.000Z","modified":"2025-08-29T21:46:48.281Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"symfony/ux-twig-component","ranges":[{"events":[{"introduced":"0"},{"fixed":"2.25.1"}],"type":"ECOSYSTEM"}],"versions":["v2.0.0","v2.0.1","v2.1.0","v2.1.1","v2.10.0","v2.11.0","v2.11.1","v2.11.2","v2.12.0","v2.13.0","v2.13.1","v2.13.3","v2.14.0","v2.14.2","v2.15.0","v2.16.0","v2.17.0","v2.18.0","v2.18.1","v2.19.0","v2.19.2","v2.2.0","v2.20.0","v2.21.0","v2.22.0","v2.22.1","v2.23.0","v2.24.0","v2.25.0","v2.3.0","v2.4.0","v2.5.0","v2.6.0","v2.6.1","v2.7.0","v2.7.1","v2.8.0","v2.8.1","v2.9.0","v2.9.1","v2.9.2"],"fixed":["2.25.1"]},{"ecosystem":"Packagist","name":"symfony/ux-live-component","ranges":[{"events":[{"introduced":"0"},{"fixed":"2.25.1"}],"type":"ECOSYSTEM"}],"versions":["v2.0.0","v2.0.1","v2.1.0","v2.1.1","v2.10.0","v2.11.0","v2.11.1","v2.11.2","v2.12.0","v2.13.0","v2.13.1","v2.13.2","v2.13.3","v2.14.0","v2.14.1","v2.14.2","v2.15.0","v2.16.0","v2.17.0","v2.18.0","v2.18.1","v2.19.0","v2.19.2","v2.2.0","v2.20.0","v2.21.0","v2.22.0","v2.22.1","v2.23.0","v2.24.0","v2.25.0","v2.3.0","v2.4.0","v2.5.0","v2.6.0","v2.6.1","v2.7.0","v2.7.1","v2.8.0","v2.8.1","v2.9.0","v2.9.1"],"fixed":["2.25.1"]}],"references":["https://github.com/symfony/ux/security/advisories/GHSA-5j3w-5pcr-f8hg","https://nvd.nist.gov/vuln/detail/CVE-2025-47946","https://github.com/symfony/ux-live-component/commit/7ad44cf56d750b9f56658ed986286a10da132ee7","https://github.com/symfony/ux-twig-component/commit/b5d4e77db69315aeb18d2238e0e7c943d340ce76","https://github.com/symfony/ux/commit/b5d1c85995c128cb926d47a96cfbfbd500b643a8","https://github.com/symfony/ux/commit/c2f7738ee0969c31df7514025a7f5fc6e153932d","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/ux-live-component/CVE-2025-47946.yaml","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/ux-twig-component/CVE-2025-47946.yaml","https://github.com/symfony/ux","https://symfony.com/blog/symfony-ux-cve-2025-47946-unsanitized-html-attribute-injection-via-componentattributes"],"sources":[{"name":"OSV","id":"GHSA-5j3w-5pcr-f8hg","modified":"2025-08-29T21:46:48.281175Z","url":"https://osv.dev/vulnerability/GHSA-5j3w-5pcr-f8hg"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1}]}