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VULNERABILITIES

CVE-2026-49208 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/symfony/ux/commit/d24d78fda6df2d5964312255943ebf3a217b79a2 [email protected]Patch
https://github.com/symfony/ux/releases/tag/v2.36.0 [email protected]Release Notes
https://github.com/symfony/ux/releases/tag/v3.1.0 [email protected]Release Notes
https://github.com/symfony/ux/security/advisories/GHSA-89g7-22c8-3j23 [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-20Improper Input Validation[email protected]

Affected Products

ProductVersions
symfony ux
>= 2.8.0, < 2.36.0
3.0.0

CPE

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

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-49208
NVD Published Date:
Jul 17, 2026
NVD Last Modified:
Jul 21, 2026
Source:
[email protected]
CVE-2026-49208 Details - Not Deferred