Nestjs: >> Nest >> 11.1.18 Security Vulnerabilities
Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.19, when an attacker sends many small, valid JSON messages in one TCP frame, handleData() recurses once per message; the buffer shrinks each call. maxBufferSize is never reached; call stack overflows instead. A ~47 KB payload is sufficient to trigger RangeError. This vulnerability is fixed in 11.1.19.
CVSS Score
7.5
EPSS Score
0.001
Published
2026-04-21