CVE-2025-23167
Published: May 19, 2025
Modified: May 27, 2025
CVSS v3.0
6.5
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.
| Vendor | Product | Versions |
|---|---|---|
nodejs | node | affected 4.0 - < 4.*affected 5.0 - < 5.*affected 6.0 - < 6.*affected 7.0 - < 7.*affected 8.0 - < 8.*+12 more versions |
CVSS v3.0 Details
CVSS v3.0 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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