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React2Shell Vulnerability Exploited; Experts Urge Immediate Patching

12/7/2025

Summary

Story summary

Within hours of public disclosure on December 3, 2025, the React2Shell vulnerability (CVE-2025-55182) was actively exploited by Earth Lamia and Jackpot Panda.
The flaw enables unauthenticated remote code execution in specific versions of the React JavaScript library.
AWS reported exploitation attempts were detected almost immediately.
Cloudflare experienced a brief outage while implementing mitigations.
Security experts urge immediate patching, noting traditional timelines are no longer sufficient against fast-moving threats.

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Story summary

Within hours of public disclosure on December 3, 2025, the React2Shell vulnerability (CVE-2025-55182) was actively exploited by Earth Lamia and Jackpot Panda.
The flaw enables unauthenticated remote code execution in specific versions of the React JavaScript library.
AWS reported exploitation attempts were detected almost immediately.
Cloudflare experienced a brief outage while implementing mitigations.
Security experts urge immediate patching, noting traditional timelines are no longer sufficient against fast-moving threats.