CVE-2021-44532: Debian Linux

Medium severity, CVSS 5.3. EPSS: 10.4% chance of exploitation in the next 30 days.

Node.js < 12.22.9, < 14.18.3, < 16.13.2, and < 17.3.1 converts SANs (Subject Alternative Names) to a string format. It uses this string to check peer certificates against hostnames when validating connections. The string format was subject to an injection vulnerability when name constraints were used within a certificate chain, allowing the bypass of these name constraints.Versions of Node.js with the fix for this escape SANs containing the problematic characters in order to prevent the injection. This behavior can be reverted through the --security-revert command-line option.

Affected products

• Debian Debian Linux: version 11.0 only
• Node.js Node.js: before 12.22.9 (fixed in 12.22.9); from 14.0.0, before 14.18.3 (fixed in 14.18.3); from 16.0.0, before 16.13.2 (fixed in 16.13.2); from 17.0.0, before 17.3.1 (fixed in 17.3.1)
• Oracle Graalvm: version 20.3.5 only; version 21.3.1 only; version 22.0.0.2 only
• Oracle MySQL Cluster: up to and including 8.0.29
• Oracle MySQL Connectors: up to and including 8.0.28
• Oracle MySQL Enterprise Monitor: up to and including 8.0.29
• Oracle MySQL Server: up to and including 5.7.37; from 8.0.0, up to and including 8.0.28
• Oracle MySQL Workbench: from 8.0.0, up to and including 8.0.28
• Oracle PeopleSoft Enterprise PeopleTools: version 8.58 only; version 8.59 only

Published 2022-02-24. Last modified 2026-06-17.