Improper Validation of Unsafe Equivalence in Input Affecting symfony/ux-live-component package, versions >=2.8.0, <2.36.0>=3.0.0, <3.1.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PHP-SYMFONYUXLIVECOMPONENT-17339264
- published15 Jun 2026
- disclosed29 May 2026
- creditPascal CESCON
Introduced: 29 May 2026
CVE-2026-49208 (opens in a new tab)How to fix?
Upgrade symfony/ux-live-component to version 2.36.0, 3.1.0 or higher.
Overview
symfony/ux-live-component is a Live components for Symfony
Affected versions of this package are vulnerable to Improper Validation of Unsafe Equivalence in Input via hydration of writable #[LiveProp] properties typed as DateTimeInterface. An attacker can manipulate time-based application logic by supplying relative date strings such as "now", "tomorrow", or "+10 years" to a writable date property that does not specify an explicit format. Because LiveComponentHydrator::hydrateObjectValue() instantiates the target type using new $className($value), relative expressions are accepted and may cause the application to evaluate business rules using attacker-controlled points in time.
Note: This is only exploitable if a writable #[LiveProp] is typed as DateTimeInterface and no explicit date format is configured.