| Package | Affected versions | Patched versions |
|---|---|---|
| node.js | ≥ 18.0.0, < 18.19.1≥ 20.0.0, < 20.11.1≥ 21.0.0, < 21.6.2 | 18.19.120.11.121.6.2 |
A vulnerability in Node.js HTTP servers allows an attacker to send a specially crafted HTTP request with chunked encoding, leading to resource exhaustion and denial of service (DoS). The server reads an unbounded number of bytes from a single connection, exploiting the lack of limitations on chunk extension bytes. The issue can cause CPU and network bandwidth exhaustion, bypassing standard safeguards like timeouts and body size limits.
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