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.
CVSS Details
- CVSS 3.0 Base Score: 6.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade nodejs20-libsUpgrade v8-11.3-develUpgrade nodejs20-debugsourceUpgrade nodejs20-develUpgrade nodejs20Upgrade nodejs20-npmUpgrade nodejs20-debuginfoUpgrade nodejs20-docsUpgrade nodejs20-full-i18nUpgrade nodejs20-libs-debuginfo | Jun 11, 2025 | May 19, 2025 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | May 19, 2025 |
| Debian | — | No solution exists | May 20, 2025 | May 19, 2025 |
| Redhat_linux | — | Upgrade nodejs-debuginfoUpgrade npmUpgrade nodejs-packaging-bundlerUpgrade nodejs-full-i18nUpgrade nodejsUpgrade nodejs-debugsourceUpgrade nodejs-nodemonUpgrade nodejs-develUpgrade nodejs-packagingUpgrade nodejs-docs | Jun 6, 2025 | May 19, 2025 |
| Rocky_linux | — | Upgrade npmUpgrade nodejsUpgrade nodejs-debuginfoUpgrade nodejs-full-i18nUpgrade nodejs-debugsourceUpgrade nodejs-devel | Sep 9, 2025 | Jul 29, 2025 |
| Suse | — | Upgrade npm20Upgrade nodejs20Upgrade nodejs20-docsUpgrade corepack20Upgrade nodejs20-devel | Dec 5, 2025 | Jun 20, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 2, 2025 | May 19, 2025 |
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