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Effect `AsyncLocalStorage` context lost/contaminated inside Effect fibers under concurrent load with RPC

🗓️ 20 Mar 2026 20:34:06Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 12 Views

AsyncLocalStorage context is shared across fibers during MixedScheduler drain under concurrent RPC load, causing context contamination.

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Vulners
Node
effect_projecteffectRange<3.20.0npm

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25 Mar 2026 18:11Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.17.4
EPSS0.0027
SSVC
12