Cross-Site Scripting and JSON Injection Vulnerability in Quarkus Qute Template Engine
CVE-2026-93432

6.1MEDIUM

Key Information:

Vendor

Red Hat
Status
Exploit Intelligence
Red Hat Build Of Apache Camel 4 For Quarkus 3
Red Hat Build Of Apicurio Registry 3
Red Hat Build Of Keycloak
Vendor
CVE Published:
18 September 2026

What is CVE-2026-93432?

A flaw exists in the Quarkus Qute template engine that occurs during the processing of sub-templates using the {#eval} section helper. This flaw prevents the transfer of the parent template's content type information, which circumvents standard escaping mechanisms for output data. As a result, untrusted data can be rendered as raw, unescaped text. The exploitation of this vulnerability may lead to Cross-Site Scripting (XSS) and JSON Injection attacks, enabling remote attackers to execute arbitrary code within user browsers or manipulate sensitive data.

References

https://access.redhat.com/security/cve/CVE-2026-93432
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2536859
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Michael Read for reporting this issue.
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