CVE-2026-49208

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/symfony/ux/commit/d24d78fda6df2d5964312255943ebf3a217b79a2	Patch
https://github.com/symfony/ux/releases/tag/v2.36.0	Release Notes
https://github.com/symfony/ux/releases/tag/v3.1.0	Release Notes
https://github.com/symfony/ux/security/advisories/GHSA-89g7-22c8-3j23	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:symfony:ux::::::::
	cpe:2.3:a:symfony:ux:3.0.0:::::::*

History

24 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Symfony UX es un ecosistema JavaScript para Symfony. Desde 2.8.0 hasta 2.36.0 y 3.1.0, cuando una #[LiveProp] se tipifica como DateTimeInterface y no se configura un formato explícito, Symfony\UX\LiveComponent\LiveComponentHydrator::hydrateObjectValue() recurre a new $className($value), permitiendo que cadenas relativas suministradas por el cliente, como now, tomorrow o +10 years, muevan una propiedad de fecha editable y sin formato más allá de las comprobaciones de lógica de negocio basadas en el tiempo. Este problema se corrige en las versiones 2.36.0 y 3.1.0.

Information

Published : 2026-07-17 17:17

Updated : 2026-10-24 20:10

NVD link : CVE-2026-49208

Mitre link : CVE-2026-49208

CVE.ORG link : CVE-2026-49208

JSON object : View

Products Affected

symfony

ux

CWE

CWE-20

Improper Input Validation

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Desde 2.8.0 hasta 2.36.0 y 3.1.0, cuando una #[LiveProp] se tipifica como DateTimeInterface y no se configura un formato expl\u00edcito, Symfony\\UX\\LiveComponent\\LiveComponentHydrator::hydrateObjectValue() recurre a new $className($value), permitiendo que cadenas relativas suministradas por el cliente, como now, tomorrow o +10 years, muevan una propiedad de fecha editable y sin formato m\u00e1s all\u00e1 de las comprobaciones de l\u00f3gica de negocio basadas en el tiempo. Este problema se corrige en las versiones 2.36.0 y 3.1.0."}], "lastModified": "2026-10-24T20:10:00.137", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:symfony:ux:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7E04634C-08E2-4FBF-B4FE-420B544D2C1F", "versionEndExcluding": "2.36.0", "versionStartIncluding": "2.8.0"}, {"criteria": "cpe:2.3:a:symfony:ux:3.0.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3C0974BE-BF17-497A-BA94-8B89B2BE9788"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}