Feb 2026: Azure HDInsight Spoofing Vulnerability
CVE-2026-21529 Published on February 10, 2026
Azure HDInsight Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Azure HDInsights allows an authorized attacker to perform spoofing over a network.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2026-21529 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2026-21529
You can be notified by email with stack.watch whenever vulnerabilities like CVE-2026-21529 are published in Microsoft Azure Hdinsights:
Affected Versions
Microsoft Azure HDInsight:- Version 1.0 and below 5.1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.