AUGUST 4, 2026
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Case File

CVE-2021-22884

HIGH · CVSS 7.5 EPSS 32.36%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-03-03 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. Its EPSS score suggests a 32.4% probability of exploitation in the next 30 days.

CVE
CVE-2021-22884
Severity
HIGH
CVSS
7.5
EPSS
32.36%

Original NVD 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.

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