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Vulnerability record · CVE-2021-44532 · published 24 February 2022

CVE-2021-44532: Nodejs node.js improper certificate validation vulnerability

Nodejs · Node.Js

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.

5.3 CVSS 3.1 Medium EPSS 10% · top 4.4% CWE-296 · CWE-296CWE-295 · Improper certificate validation
5.3CVSS 3.1 base score, v2 5.0
10%EPSS exploitation probability, 30 days
NoNot in CISA KEV
9Affected product versions listed by NVD
12References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

9 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://hackerone.com/reports/1429694 MitigationThird Party Advisory
https://nodejs.org/en/blog/vulnerability/jan-2022-security-releases/ ExploitRelease NotesVendor Advisory
https://security.netapp.com/advisory/ntap-20220325-0007/ Third Party Advisory
https://www.debian.org/security/2022/dsa-5170 Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html Third Party Advisory
https://hackerone.com/reports/1429694 MitigationThird Party Advisory
https://nodejs.org/en/blog/vulnerability/jan-2022-security-releases/ ExploitRelease NotesVendor Advisory
https://security.netapp.com/advisory/ntap-20220325-0007/ Third Party Advisory
https://www.debian.org/security/2022/dsa-5170 Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-44532), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.