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Vulnerability record · CVE-2021-44531 · published 24 February 2022

CVE-2021-44531: Nodejs node.js improper certificate validation vulnerability

Nodejs · Node.Js

Accepting arbitrary Subject Alternative Name (SAN) types, unless a PKI is specifically defined to use a particular SAN type, can result in bypassing name-constrained intermediates. Node.js < 12.22.9, < 14.18.3, < 16.13.2, and < 17.3.1 was accepting URI SAN types, which PKIs are often not defined to use. Additionally, when a protocol allows URI SANs, Node.js did not match the URI correctly.Versions of Node.js with the fix for this disable the URI SAN type when checking a certificate against a hostname. This behavior can be reverted through the --security-revert command-line option.

7.4 CVSS 3.1 High EPSS 8.4% · top 5.2% CWE-295 · Improper certificate validation
7.4CVSS 3.1 base score, v2 5.8
8.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
8Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

Accepting arbitrary Subject Alternative Name (SAN) types, unless a PKI is specifically defined to use a particular SAN type, can result in bypassing name-constrained intermediates. Node.js < 12.22.9, < 14.18.3, < 16.13.2, and < 17.3.1 was accepting URI SAN types, which PKIs are often not defined to use. Additionally, when a protocol allows URI SANs, Node.js did not match the URI correctly.Versions of Node.js with the fix for this disable the URI SAN type when checking a certificate against a hostname. This behavior can be reverted through the --security-revert command-line option.

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

Affected products

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

References

LinkTags
https://hackerone.com/reports/1429694 Issue TrackingMitigationPatchThird Party Advisory
https://nodejs.org/en/blog/vulnerability/jan-2022-security-releases/ Release 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 Issue TrackingMitigationPatchThird Party Advisory
https://nodejs.org/en/blog/vulnerability/jan-2022-security-releases/ Release 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-2021-44531), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.