CVSS Score of 10 (low)


Published Jul 1, 2023
Updated: Dec 12, 2023


CVE-2023-30589, also known as the llhttp parser vulnerability, affects the http module in Node.js versions v16, v18, and v20.2.0. This vulnerability arises from the parser's failure to strictly use the CRLF sequence to delimit HTTP requests, allowing for HTTP Request Smuggling (HRS). According to RFC7230 section 3, only the CRLF sequence should be used to delimit each header-field. The impact of this vulnerability is considered high, with a CVSS base score of 7.5 out of 10. To remediate this issue, organizations should update their Node.js installations to a patched version that addresses this vulnerability.


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