Scworld Operation PCPcat Compromises Over 59,000 Next.js/React Servers
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Operation PCPcat has compromised 59,128 Next.js and React servers in under 48 hours, exploiting critical vulnerabilities CVE-2025-29927 and CVE-2025-66478. The attackers utilized prototype pollution in JSON payloads to achieve a 64.6% success rate across 91,505 scanned targets, deploying PCPCat scanners via react.py malware.
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