{"id":"GHSA-5j3w-5pcr-f8hg","summary":"Symfony UX allows unsanitized HTML attribute injection via ComponentAttributes","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'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)","aliases":["CVE-2025-47946"],"modified":"2025-08-29T21:46:48.281175Z","published":"2025-05-19T22:24:45Z","database_specific":{"github_reviewed_at":"2025-05-19T22:24:45Z","nvd_published_at":"2025-05-19T20:15:26Z","cwe_ids":["CWE-79"],"severity":"MODERATE","github_reviewed":true},"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"}],"affected":[{"package":{"name":"symfony/ux-twig-component","ecosystem":"Packagist","purl":"pkg:composer/symfony/ux-twig-component"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.25.1"}]}],"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"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/05/GHSA-5j3w-5pcr-f8hg/GHSA-5j3w-5pcr-f8hg.json"}},{"package":{"name":"symfony/ux-live-component","ecosystem":"Packagist","purl":"pkg:composer/symfony/ux-live-component"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.25.1"}]}],"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"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/05/GHSA-5j3w-5pcr-f8hg/GHSA-5j3w-5pcr-f8hg.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}