CVE-2026-12894: Quarkus Quarkus-Qute

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Quarkus Quarkus-Qute: from 3.27.0, before 3.27.5.SP1 (fixed in 3.27.5.SP1); from 3.33.0, before 3.33.3.SP1 (fixed in 3.33.3.SP1)
• Red Hat Red Hat Build Of Apache Camel 4 For Quarkus 3
• Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack

Published 2026-08-31. Last modified 2026-09-11.