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Vulnerability record · CVE-2021-22931 · published 16 August 2021

CVE-2021-22931: Nodejs node.js improper input validation vulnerability

Nodejs · Node.Js

Node.js before 16.6.0, 14.17.4, and 12.22.4 is vulnerable to Remote Code Execution, XSS, Application crashes due to missing input validation of host names returned by Domain Name Servers in Node.js dns library which can lead to output of wrong hostnames (leading to Domain Hijacking) and injection vulnerabilities in applications using the library.

9.8 CVSS 3.1 Critical EPSS 22% · top 2.4% CWE-170 · CWE-170CWE-20 · Improper input validation
9.8CVSS 3.1 base score, v2 7.5
22%EPSS exploitation probability, 30 days
NoNot in CISA KEV
10Affected product versions listed by NVD
18References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Node.js before 16.6.0, 14.17.4, and 12.22.4 is vulnerable to Remote Code Execution, XSS, Application crashes due to missing input validation of host names returned by Domain Name Servers in Node.js dns library which can lead to output of wrong hostnames (leading to Domain Hijacking) and injection vulnerabilities in applications using the library.

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

Affected products

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

References

LinkTags
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf PatchThird Party Advisory
https://hackerone.com/reports/1178337 ExploitIssue TrackingThird Party Advisory
https://nodejs.org/en/blog/vulnerability/aug-2021-security-releases/ PatchVendor Advisory
https://security.gentoo.org/glsa/202401-02
https://security.netapp.com/advisory/ntap-20210923-0001/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20211022-0003/ Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html PatchThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf PatchThird Party Advisory
https://hackerone.com/reports/1178337 ExploitIssue TrackingThird Party Advisory
https://nodejs.org/en/blog/vulnerability/aug-2021-security-releases/ PatchVendor Advisory
https://security.gentoo.org/glsa/202401-02
https://security.netapp.com/advisory/ntap-20210923-0001/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20211022-0003/ Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html PatchThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-22931), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.