HOMEVULNERABILITIESCVE-2021-22884
HIGH

CVE-2021-22884

CWE-350Published: March 3, 2021· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2021-22884 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

Fedora1 product(s)
fedora
netapp5 product(s)
active iq unified managere-series performance analyzeroncommand insightoncommand workflow automationsnapcenter
Node.js1 product(s)
node.js
Oracle5 product(s)
graalvmjd edwards enterpriseone toolsmysql clusternosql databasepeoplesoft enterprise peopletools
siemens1 product(s)
sinec infrastructure network services
Source: NVD CPE · 18 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
PATCHhttps://nodejs.org/en/blog/vulnerability/february-2021-security-releases/
PATCHhttps://nodejs.org/en/blog/vulnerability/march-2018-security-releases/#node-js-inspector-dns-rebinding-vulnerability-cve-2018-7160
PATCHhttps://www.oracle.com//security-alerts/cpujul2021.html
PATCHhttps://www.oracle.com/security-alerts/cpuApr2021.html
PATCHhttps://www.oracle.com/security-alerts/cpuoct2021.html
PATCHhttps://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
PATCHhttps://nodejs.org/en/blog/vulnerability/february-2021-security-releases/
PATCHhttps://nodejs.org/en/blog/vulnerability/march-2018-security-releases/#node-js-inspector-dns-rebinding-vulnerability-cve-2018-7160
PATCHhttps://www.oracle.com//security-alerts/cpujul2021.html
PATCHhttps://www.oracle.com/security-alerts/cpuApr2021.html
PATCHhttps://www.oracle.com/security-alerts/cpuoct2021.html
ADVISORYhttps://hackerone.com/reports/1069487
ADVISORYhttps://security.netapp.com/advisory/ntap-20210416-0001/
ADVISORYhttps://security.netapp.com/advisory/ntap-20210723-0001/
ADVISORYhttps://hackerone.com/reports/1069487
ADVISORYhttps://security.netapp.com/advisory/ntap-20210416-0001/
ADVISORYhttps://security.netapp.com/advisory/ntap-20210723-0001/

All References (24)

→
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/

Quick Facts

CVE IDCVE-2021-22884
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-350
CISA KEVNo
Affected5 vendor(s)
PublishedMar 3, 2021

Related CVEs (CWE-350)

CVE-2026-1490
9.8
CVE-2018-7160
8.8
CVE-2021-34561
8.8
CVE-2023-52235
8.8
CVE-2017-0902
8.1
CVE-2025-8036
8.1

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-22884 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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