CVE-2025-11953
React Native Community CLI OS Command Injection Vulnerability
The Metro Development Server, which is opened by the React Native Community CLI, binds to external interfaces by default. The server exposes an endpoint that is vulnerable to OS command injection. This allows unauthenticated network attackers to send a POST request to the server and run arbitrary executables. On Windows, the attackers can also execute arbitrary shell commands with fully controlled arguments.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Deadline for federal agencies: 2026-02-26.
7 articles across 5 outlets · first covered Feb 3, 2026 · latest Feb 6, 2026
Coverage timeline
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U.S. CISA adds SmarterTools SmarterMail and React Native Community CLI flaws to its Known Exploited Vulnerabilities catalogsecurityaffairs.com · Feb 6, 2026
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Critical SmarterMail Vulnerability Exploited in Ransomware Attackswww.securityweek.com · Feb 6, 2026
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CVE-2025-11953 (Metro4Shell) in React Native Metro Server Enables RCEsocradar.io · Feb 4, 2026
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Silent Intrusion: “Metro4Shell” Exploited in the Wild Since Decembersecurityonline.info · Feb 4, 2026
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Hackers abused React Native CLI flaw to deploy Rust malware before public disclosuresecurityaffairs.com · Feb 3, 2026
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Hackers Exploit Metro4Shell RCE Flaw in React Native CLI npm Packagethehackernews.com · Feb 3, 2026
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Critical React Native Vulnerability Exploited in the Wildwww.securityweek.com · Feb 3, 2026