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.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49208.json",
"cwe_ids": [
"CWE-20"
],
"cna_assigner": "GitHub_M"
}{
"source": [
"CPE_RANGE",
"CPE_STRING",
"REFERENCES"
],
"cpe": [
"cpe:2.3:a:symfony:ux:*:*:*:*:*:*:*:*",
"cpe:2.3:a:symfony:ux:3.0.0:*:*:*:*:*:*:*"
],
"extracted_events": [
{
"introduced": "2.8.0"
},
{
"fixed": "2.36.0"
},
{
"introduced": "3.0.0"
},
{
"last_affected": "3.0.0"
}
]
}