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Vulnerabilities CVE-2026-49208

CVE-2026-49208

Medium
Open
TLP:CLEAR

Symfony UX: Format-less date LiveProps parsed with the permissive DateTime constructor

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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.

Details

CVSS Score
6.9
EPSS Score
0.24%

15.3th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Confidence
90%
Published
Jul 17, 2026
Last Modified
Jul 17, 2026
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