{"id":"CVE-2026-49208","aliases":["GHSA-89g7-22c8-3j23"],"url":"https://o3.security/vulnerability/CVE-2026-49208","summary":"Symfony UX: Format-less date LiveProps parsed with the permissive DateTime constructor","details":"Symfony UX is a JavaScript ecosystem for Symfony. From 2.8.0 until 2.36.0 and 3.1.0, when a #[LiveProp] is typed as DateTimeInterface and no explicit format is configured, Symfony\\UX\\LiveComponent\\LiveComponentHydrator::hydrateObjectValue() falls back to new $className($value), allowing client-supplied relative strings such as now, tomorrow, or +10 years to move a writable, format-less date prop past time-based business logic checks. This issue is fixed in versions 2.36.0 and 3.1.0.","published":"2026-07-17T16:10:49.101Z","modified":"2026-08-12T03:51:49.060801263Z","cvss":null,"epss":{"score":0.00412,"percentile":0.34658,"asOf":"2026-09-13"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"symfony/ux-live-component","fixedVersion":"2.36.0"},{"ecosystem":"Packagist","name":"symfony/ux-live-component","fixedVersion":"3.1.0"}],"fix":{"url":"https://github.com/symfony/ux/commit/d24d78fda6df2d5964312255943ebf3a217b79a2","label":"symfony/ux@d24d78f"},"references":[{"type":"WEB","url":"https://github.com/symfony/ux/releases/tag/v2.36.0"},{"type":"WEB","url":"https://github.com/symfony/ux/releases/tag/v3.1.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49208.json"},{"type":"ADVISORY","url":"https://github.com/symfony/ux/security/advisories/GHSA-89g7-22c8-3j23"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49208"},{"type":"FIX","url":"https://github.com/symfony/ux/commit/d24d78fda6df2d5964312255943ebf3a217b79a2"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:49.060801263Z"}}