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TI-2026-17382 Aliases CVE-2026-21529GHSA-8754-7pfj-x7mr

Azure HDInsight Spoofing Vulnerability

Priority LOW 27CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from Microsoft.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00654 51st percentileScored 2026-11-07
Fix Fixed Azure HDInsight (Microsoft): 5.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftAzure HDInsight1.0 to before 5.15.1Patch availableCNA
  • Azure HDInsight VendorMicrosoft Affected 1.0 to before 5.1 Fixed in 5.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:azure_hdinsight:*:*:*:*:*:*:*:*before 5.1VulnerableMicrosoft
  • cpe:2.3:a:microsoft:azure_hdinsight:*:*:*:*:*:*:*:* Versions before 5.1 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Azure HDInsight (Microsoft) Fixed in 5.1

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Spoofing
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Unlikely
ProductStatusPlan or fix
Azure HDInsightFixed 5.1 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-21529
  2. 2026-10-03 Alias added: GHSA-8754-7pfj-x7mr
  3. 2026-10-07 EPSS moved to the 50th–90th percentile

References

Patch 1

  • TI-2023-18280 Azure HDInsight Apache Oozie Workflow Scheduler XXE Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2026-56164 Azure HDInsight Ambari Elevation of Privilege Vulnerability CVSS 3.1HIGH 7.2
  • TI-2023-19575 Azure HDInsight Apache Ambari JDBC Injection Elevation of Privilege Vulnerability CVSS 3.1HIGH 7.2
  • TI-2023-09251 Azure Apache Ambari Spoofing Vulnerability CVSS 3.1MEDIUM 4.5
  • TI-2023-17728 Azure Apache Hive Spoofing Vulnerability CVSS 3.1MEDIUM 4.5
  • TI-2023-19603 Azure Apache Hadoop Spoofing Vulnerability CVSS 3.1MEDIUM 4.5
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences