Qute RefResolver bypass allows code exec in Quarkus
CVE-2026-12894 Published on August 31, 2026

Quarkus-qute: io.quarkus.qute.reflectionvalueresolver: quarkus:server-side template injection (ssti) vulnerability in reflectionvalueresolver of the quarkus qute template engine
A flaw was found in the Qute template engine, which is used by Quarkus to generate dynamic content like HTML pages or emails. The issue exists in the component responsible for looking up data values (ReflectionValueResolver), which fails to properly block access to sensitive Java internal functions when processing certain data types like Enums. An attacker who can provide or influence the template text can exploit this bypass to take control of the server by executing unauthorized commands.

NVD

Vulnerability Analysis

CVE-2026-12894 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Timeline

Reported to Red Hat.

Made public. 116 days later.

Weakness Type

CWE-1336

Products Associated with CVE-2026-12894

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Red Hat Camel Quarkus
 
Red Hat Quarkus
 
Red Hat Jbosseapxp
 

Affected Versions

Red Hat build of Apache Camel 4 for Quarkus 3: Red Hat build of Apache Camel 4 for Quarkus 3: Red Hat build of Apache Camel 4 for Quarkus 3: Red Hat build of Quarkus: Red Hat JBoss Enterprise Application Platform Expansion Pack: Red Hat JBoss Enterprise Application Platform Expansion Pack: Red Hat JBoss Enterprise Application Platform Expansion Pack: