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React Router: Arbitrary Constructor Injection via deserializeErrors() in React Router SSR Hydration

🗓️ 23 Jul 2026 19:34:14Reported by GitHub Advisory DatabaseType 
github
 github🔗 github.com👁 83 Views

Error deserialization injection in React Router SSR may trigger client constructors and outbound calls.

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Vulners
Node
shopifyreact-routerRange6.4.0–7.18.0npm

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23 Jul 2026 19:34Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.16.1
EPSS0.0042
SSVC
CWE-470
React Router SSRDeserialization injectionFramework ModeData ModeManual SSR hydrationClient constructorsOutbound calls
83