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Status published
Medium
CVE-2023-23936
CRLF Injection in Nodejs ‘undici’ via host
Vulnerability Description
Undici is an HTTP/1.1 client for Node.js. Starting with version 2.0.0 and prior to version 5.19.1, the undici library does not protect `host` HTTP header from CRLF injection vulnerabilities. This issue is patched in Undici v5.19.1. As a workaround, sanitize the `headers.host` string before passing to undici.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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Affected Vendor
nodejs
View all reports →Affected Software
undici
Vulnerable Versions:
>=2.0.0, < 5.19.1
Timeline
Official Publish:
February 16th, 2023
Last Modified:
March 10th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weaknesses (CWE)
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.