vulnerability
Red Hat: CVE-2025-23167: nodejs: Improper HTTP Header Termination in Node.js 20 Enables Request Smuggling (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:L/Au:N/C:P/I:P/A:N) | May 19, 2025 | Jun 6, 2025 | Aug 11, 2025 |
Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:N)
Published
May 19, 2025
Added
Jun 6, 2025
Modified
Aug 11, 2025
Description
A flaw in Node.js 20's HTTP parser allows improper termination of HTTP/1 headers using `\r\n\rX` instead of the required `\r\n\r\n`.
This inconsistency enables request smuggling, allowing attackers to bypass proxy-based access controls and submit unauthorized requests.
The issue was resolved by upgrading `llhttp` to version 9, which enforces correct header termination.
Impact:
* This vulnerability affects only Node.js 20.x users prior to the `llhttp` v9 upgrade.
Solutions
redhat-upgrade-nodejsredhat-upgrade-nodejs-debuginforedhat-upgrade-nodejs-debugsourceredhat-upgrade-nodejs-develredhat-upgrade-nodejs-docsredhat-upgrade-nodejs-full-i18nredhat-upgrade-nodejs-nodemonredhat-upgrade-nodejs-packagingredhat-upgrade-nodejs-packaging-bundlerredhat-upgrade-npm
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