Azure HDInsights
CVE-2026-21529 — Azure HDInsight Spoofing Vulnerability
Executive Summary
Improper neutralization of input during web page generation ('cross-site scripting') in Azure HDInsights allows an authorized attacker to perform spoofing over a network.
Overview
5.7
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Exploitation Unlikely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
Required
SCOPE
Unchanged
Temporal Score: 5.0
EPSS Score
0.00622
probability of exploitation in the next 30 days
0.45051 percentile - updated 2026-06-20
View on FIRST.org
Affected Products
1 affected product
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Azure HDInsight | Release Notes (Security Update) Release Notes (Security Update) |
Important | Spoofing | No |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
Release Notes (Security Update) Release Notes |
Security Update | No |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Tomer Nahum with Semperis
References
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