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WAFs Ineffective Against React2Shell Exploit, Security Experts Warn

First seen 18 Dec 2025, 16:54 UTC • •20

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ThreatCluster •March 12, 2026 at 13:27 UTC

A report from Miggo Security reveals that Web Application Firewalls (WAFs) are unable to prevent attacks stemming from the latest React2Shell exploit. This vulnerability poses significant risks to web applications, affecting organizations relying on WAFs for security. The report emphasizes the need for improved security measures to address this critical weakness.

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2 entities, 1 inferred relationships (STIX 2.1).

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Malware (1)

React2Shell

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