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react

Within hours of the public disclosure of CVE-2025-55182 (React2Shell) on December 3, 2025, Amazon threat intelligence teams observed active exploitation attempts by multiple China state-nexus threat groups, including Earth Lamia and Jackpot Panda. This critical vulnerability in React Server Components has a maximum Common Vulnerability Scoring System (CVSS) score of 10.0 and affects React versions 19.x and Next.js versions 15.x and 16.x when using App Router.

CVE-2025-55182, dubbed React2Shell, is a critical vulnerability discovered in React Server Components affecting React 19.x and Next.js 15.x and 16.x versions when using the App Router feature. This vulnerability enables unauthenticated attackers to execute arbitrary code remotely by exploiting flaws in the server-side rendering process of React applications. The vulnerability was publicly disclosed on December 3, 2025, and within hours, multiple China state-sponsored threat groups, notably Earth Lamia and Jackpot Panda, were observed actively attempting exploitation. These groups are known for targeting strategic sectors and leveraging zero-day vulnerabilities for espionage and disruption. The vulnerability carries a theoretical CVSS score of 10.0, indicating maximum severity, although the provided data lists severity as medium, likely reflecting initial uncertainty or incomplete impact assessment. The attack vector involves sending crafted requests to vulnerable React Server Components, triggering execution of malicious payloads on the server. This can lead to full system compromise, data theft, or deployment of further malware. The threat actors have been observed using IP addresses linked to known malicious infrastructure. No confirmed widespread exploitation has been reported yet, but the rapid weaponization and targeting by advanced threat actors underscore the urgency. The vulnerability affects a broad range of web applications built on popular JavaScript frameworks, making it a high-value target for attackers. The lack of official patch links in the data suggests that organizations must monitor vendor advisories closely and apply mitigations promptly once available.

Detailed information about China-nexus cyber threat groups rapidly exploit React2Shell vulnerability (CVE-2025-55182). Get real-time updates, technical details,

China-nexus cyber threat groups rapidly exploit React2Shell vulnerability (CVE-2025-55182) - Live Threat Intelligence - Threat Radar | OffSeq.com

China-nexus cyber threat groups rapidly exploit React2Shell vulnerability (CVE-2025-55182)

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