CVE-2023-23936
Publication date 16 February 2023
Last updated 26 August 2025
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| node-undici | ||
| 22.04 LTS jammy | Not in release | |
| 20.04 LTS focal | Not in release | |
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Ignored end of standard support | |
| 14.04 LTS trusty | Ignored end of standard support |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
5.4 · Medium
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity impact | Low |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N |
References
Other references
- https://github.com/nodejs/undici/security/advisories/GHSA-5r9g-qh6m-jxff
- https://github.com/nodejs/undici/commit/a2eff05401358f6595138df963837c24348f2034 (v5.19.1)
- https://github.com/nodejs/undici/releases/tag/v5.19.1
- https://github.com/nodejs/undici/commit/a2eff05401358f6595138df963837c24348f2034
- https://hackerone.com/reports/1820955
- https://www.cve.org/CVERecord?id=CVE-2023-23936