CVE-2026-21529: Azure HDInsight Spoofing Vulnerability
Azure HDInsight Spoofing Vulnerability
Other sources
Improper neutralization of input during web page generation ('cross-site scripting') in Azure HDInsights allows an authorized attacker to perform spoofing over a network.
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 5.1
Event History
Frequently Asked Questions
What is the severity of CVE-2026-21529?
CVE-2026-21529 is categorized as a spoofing vulnerability in Azure HDInsight.
How does CVE-2026-21529 affect Azure HDInsight users?
CVE-2026-21529 can allow an unauthorized attacker to perform spoofing attacks over the network on Azure HDInsight.
Are there patches available for CVE-2026-21529?
Yes, Microsoft provides patches for CVE-2026-21529, which can be accessed through Azure HDInsight release notes.
What can I do to mitigate the risks from CVE-2026-21529?
To mitigate the risks from CVE-2026-21529, it's recommended to apply the provided patches and ensure proper input validation.
Who is affected by CVE-2026-21529?
Users of Microsoft Azure HDInsight versions below 5.1 are affected by CVE-2026-21529.