CVE-2021-22884

Name: CVE-2021-22884
Creator: NVD / NIST
Published: 2021-03-03T18:15:14.957+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 32.36%

Last modified Jun 17, 2026

CVE-2021-22884 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to DNS rebinding attacks as the whitelist includes “localhost6”. When “localhost6” is not present in /etc/hosts, it is just an ordinary domain that is resolved via DNS, i.e., over network. EPSS estimates a 32.36% chance of exploitation in the next 30 days.

Description

Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to DNS rebinding attacks as the whitelist includes “localhost6”. When “localhost6” is not present in /etc/hosts, it is just an ordinary domain that is resolved via DNS, i.e., over network. If the attacker controls the victim's DNS server or can spoof its responses, the DNS rebinding protection can be bypassed by using the “localhost6” domain. As long as the attacker uses the “localhost6” domain, they can still apply the attack described in CVE-2018-7160.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

32.36%

98.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-350

Affected Software

Vendor	Product	Versions
Nodejs	Node.Js	>= 10.0.0, < 10.24.0
Nodejs	Node.Js	>= 12.0.0, < 12.21.0
Nodejs	Node.Js	>= 14.0.0, < 14.16.0
Nodejs	Node.Js	>= 15.0.0, < 15.10.0
Fedoraproject	Fedora	32
Fedoraproject	Fedora	33
Fedoraproject	Fedora	34
Netapp	Active Iq Unified Manager	All versions
Netapp	E-Series Performance Analyzer	All versions
Netapp	Oncommand Insight	All versions
Netapp	Oncommand Workflow Automation	All versions
Netapp	Snapcenter	All versions
Oracle	Graalvm	19.3.5
Oracle	Graalvm	20.3.1.2
Oracle	Graalvm	21.0.0.2
Oracle	Jd Edwards Enterpriseone Tools	< 9.2.6.0
Oracle	Mysql Cluster	<= 8.0.25
Oracle	Nosql Database	< 20.3
Oracle	Peoplesoft Enterprise Peopletools	8.58
Oracle	Peoplesoft Enterprise Peopletools	8.59
Siemens	Sinec Infrastructure Network Services	< 1.0.1.1

References

https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
https://hackerone.com/reports/1069487Exploit, Issue Tracking, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E4FRS5ZVK4ZQ7XIJQNGIKUXG2DJFHLO7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F45Y7TXSU33MTKB6AGL2Q5V5ZOCNPKOG/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HSYFUGKFUSZ27M5TEZ3FKILWTWFJTFAZ/
https://nodejs.org/en/blog/vulnerability/february-2021-security-releases/Patch, Release Notes, Vendor Advisory
https://nodejs.org/en/blog/vulnerability/march-2018-security-releases/#node-js-inspector-dns-rebinding-vulnerability-cve-2018-7160Patch, Release Notes, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210416-0001/Third Party Advisory
https://security.netapp.com/advisory/ntap-20210723-0001/Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
https://hackerone.com/reports/1069487Exploit, Issue Tracking, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E4FRS5ZVK4ZQ7XIJQNGIKUXG2DJFHLO7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F45Y7TXSU33MTKB6AGL2Q5V5ZOCNPKOG/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HSYFUGKFUSZ27M5TEZ3FKILWTWFJTFAZ/
https://nodejs.org/en/blog/vulnerability/february-2021-security-releases/Patch, Release Notes, Vendor Advisory
https://nodejs.org/en/blog/vulnerability/march-2018-security-releases/#node-js-inspector-dns-rebinding-vulnerability-cve-2018-7160Patch, Release Notes, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210416-0001/Third Party Advisory
https://security.netapp.com/advisory/ntap-20210723-0001/Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory

Timeline

Published: Mar 3, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-22884?

How severe is CVE-2021-22884?

CVE-2021-22884 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 32.36% probability of exploitation in the next 30 days.

How do I fix CVE-2021-22884?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-22884?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST