Unrated
CVE-2025-23167
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.
Announced Group revision 1
Original source ↗CVE-2025-23167
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:CVE-2025-23167
- Related CVEs
- CVE-2025-23167
Source reference:
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Publisher severity
No explicit severity was provided.
- Event
- #25921 · Revision 1
- Added to Heist Feed
- Publisher date