CVE-2026-49208

Description

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.

References

https://github.com/symfony/ux/security/advisories/GHSA-89g7-22c8-3j23

https://github.com/symfony/ux/releases/tag/v3.1.0

https://github.com/symfony/ux/releases/tag/v2.36.0

https://github.com/symfony/ux/commit/d24d78fda6df2d5964312255943ebf3a217b79a2

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS