CVE-2022-35256: Debian Linux

Medium severity, CVSS 6.5. EPSS: 2.8% chance of exploitation in the next 30 days.

The llhttp parser in the http module in Node v18.7.0 does not correctly handle header fields that are not terminated with CLRF. This may result in HTTP Request Smuggling.

Affected products

• Debian Debian Linux: version 11.0 only
• Llhttp Llhttp: before 6.0.10 (fixed in 6.0.10)
• Node.js Node.js: from 14.0.0, up to and including 14.14.0; from 14.15.0, before 14.20.1 (fixed in 14.20.1); from 16.0.0, up to and including 16.12.0; from 16.13.0, before 16.17.1 (fixed in 16.17.1); from 18.0.0, before 18.9.1 (fixed in 18.9.1)
• Siemens Sinec Ins: before 1.0 (fixed in 1.0); version 1.0 only

Published 2022-12-05. Last modified 2026-06-17.