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Vulnerability · Published Aug 31, 2026 · Assigned by redhat

CVE-2026-12894Io.quarkus:quarkus-qute: quarkus-qute:server-side template injection (ssti) vulnerability in reflectionvalueresolver of the quarkus qute template engine

High 8.8

In plain English

A high-severity security flaw in quarkus-qute from Quarkus. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)1.0%top 38.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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 (as reported)

VendorProductVersions
Quarkus quarkus-qute 3.27.0 – before 3.27.5.SP13.33.0 – before 3.33.3.SP1
Red Hat Red Hat Build of Apache Camel 3.33.3.SP1 see references
Red Hat Red Hat build of Quarkus 3.27.5.SP1 see references
Red Hat Red Hat build of Quarkus 3.33.3.SP1 see references
Red Hat Red Hat build of Apache Camel 4 for Quarkus 3 see references
Red Hat Red Hat build of Apache Camel 4 for Quarkus 3 see references
Red Hat Red Hat build of Apache Camel 4 for Quarkus 3 see references
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack see references
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack see references
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack see references

Weakness: CWE-1336 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References