CVE-2019-15606 Auth bypass in Node

What is CVE-2019-15606?

CVE-2019-15606 is a critical authentication bypass vulnerability in Debian Debian Linux, published on 7 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Including trailing white space in HTTP header values in Nodejs 10, 12, and 13 causes bypass of authorization based on header value comparisons

Weakness: CWE-20

Which versions are affected by CVE-2019-15606?

It affects 7 products.

Products include Debian Debian Linux, Nodejs Node.js, Opensuse Leap, Oracle Communications Cloud Native Core Network Function Cloud Native Environment, Oracle Graalvm, Redhat Enterprise Linux and 1 more.

How do I fix CVE-2019-15606?

Upgrade to a fixed version.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2019-15606 being exploited?

There is no known exploitation of CVE-2019-15606 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2019-15606, CLEANSTART-2026-JO86462, CLEANSTART-2026-XE23259, DEBIAN-CVE-2019-15606, GHSA-3qv8-368w-r69p, UBUNTU-CVE-2019-15606.