CVE-2025-23167
Public on 2025-05-15
Modified on 2025-05-15
Description
Improper HTTP header block termination in llhttp which enables request smuggling, allowing attackers to bypass proxy-based access controls and submit unauthorized requests. This vulnerability affects only Node.js 20.x users prior to the llhttp v9 upgrade.
Info: https://nodejs.org/en/blog/vulnerability/may-2025-security-releases#improper-http-header-block-termination-in-llhttp-cve-2025-23167---medium
Info: https://nodejs.org/en/blog/vulnerability/may-2025-security-releases#improper-http-header-block-termination-in-llhttp-cve-2025-23167---medium
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2023 | nodejs | Not Affected | ||
| Amazon Linux 2023 | nodejs20 | Pending Fix | ||
| Amazon Linux 2023 | nodejs22 | Not Affected |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | CVSSv3 | 6.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |