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CVE-2026-49208

MEDIUM
6.9
CVSS 4.0
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.

Metadata

CVE ID
CVE-2026-49208
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-05-28 03:42 UTC
Published
2026-07-17 16:10 UTC
Last updated
2026-07-17 16:10 UTC
Primary CWE
CWE-20
CWE-20: Improper Input Validation
Vendor / Product
symfony / ux
Sources
cve.org  ·  NVD

Severity & Metrics

6.9 MEDIUM CVSS 4.0
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
Affected products (1)
VendorProductPlatformVersions
symfony ux — >= 3.0.0, < 3.1.0, >= 2.8.0, < 2.36.0
Weakness (CWE)
CWESourceDescription
CWE-20 cna CWE-20: Improper Input Validation
CVSS scores (1)
ScoreSeverityVersionSourceVector
6.9 MEDIUM 4.0 cna 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
References (4)
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