CVE-2020-8201: Fedoraproject Fedora

High severity, CVSS 7.4. EPSS: 5.3% chance of exploitation in the next 30 days.

Node.js < 12.18.4 and < 14.11 can be exploited to perform HTTP desync attacks and deliver malicious payloads to unsuspecting users. The payloads can be crafted by an attacker to hijack user sessions, poison cookies, perform clickjacking, and a multitude of other attacks depending on the architecture of the underlying system. The attack was possible due to a bug in processing of carrier-return symbols in the HTTP header names.

Affected products

• Fedoraproject Fedora: version 33 only
• Node.js Node.js: from 12.0.0, before 12.18.4 (fixed in 12.18.4); from 14.0.0, before 14.11.0 (fixed in 14.11.0)
• Opensuse Leap: version 15.2 only

Published 2020-09-18. Last modified 2026-06-17.