CVE-2021-22931CriticalCVSS 9.8

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.

Published
August 25, 2021
Last Modified
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🔗 CVE IDs covered (1)

CVE-2021-22931 →

📋 Description

Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability? One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.

🎯 Affected products3

  • cbl2 nodejs 16.14.0-1 on CBL Mariner 2.0
  • cbl2 python-gevent 21.1.2-3 on CBL Mariner 2.0
  • cm1 nodejs 14.17.5-1 on CBL Mariner 1.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 14.17.5-1 KBCBL-Mariner Releases (Security Update) — fixed build 21.1.2-3 KBCBL-Mariner Releases (Security Update) — fixed build 16.14.0-1

🔗 References (2)