llhttp allows HTTP Request Smuggling via Improper Delimiting of Header Fields
The llhttp parser in the http module in Node.js does not strictly use the CRLF sequence to delimit HTTP requests. The LF character (without CR) is sufficient to delimit HTTP header fields in the lihttp parser. According to RFC7230 section 3, only the CRLF sequence should delimit each header-field. This can lead to HTTP Request Smuggling (HRS).
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | llhttp | < 6.0.7 | 6.0.7 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2022-32214
- https://github.com/nodejs/llhttp/commit/18a4afc7ffb4e49dc9e2daebc50588199a6d1dbb
- https://hackerone.com/reports/1524692
- https://datatracker.ietf.org/doc/html/rfc7230#section-3
- https://nodejs.org/en/blog/vulnerability/july-2022-security-releases
- https://security.netapp.com/advisory/ntap-20220915-0001
- https://www.debian.org/security/2023/dsa-5326
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N- Weakness (CWE)
CWE-444- Platform
- npm
- Package
llhttp- Disclosed
- 15.07.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-q5vx-44v4-gch4 - CC BY 4.0
Vulnerability history: llhttp
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 3
- First → latest
- 07.2022 07.2023
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 1
Disclosures per year
- 2022: 2
- 2023: 1
- 2024: 0
- 2025: 0
- 2026: 0
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llhttp allows HTTP Request Smuggling via Improper Delimiting of Header Fields this entry
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