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Fencer Vulns
high 8.8

CVE-2026-12894 json

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

published 2026-08-31 2 mo ago modified 2026-10-20 20 d ago also EUVD-2026-68505

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits
0
none known

Summary

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.

Patch / fix

  • Quarkus quarkus-qute 3.27.5.SP1, 3.33.3.SP1
  • Red Hat Red Hat Build of Apache Camel 3.33.3.SP1 3.33.3.redhat-00005
  • Red Hat Red Hat build of Quarkus 3.27.5.SP1 3.27.5.redhat-00004
  • Red Hat Red Hat build of Quarkus 3.33.3.SP1 3.33.3.redhat-00005

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-12894 updated cvss 8.8

io.quarkus:quarkus-qute: quarkus-qute:Server-Side Template Injection (SSTI) vulnerability in ReflectionValueResolver of the Quarkus Qute template engine

  • Red Hat build of Apache Camel 4 for Quarkus 3 quarkus-qute
    affected: workaround, no fix available
  • Red Hat Build of Apache Camel 3.33.3.SP1 quarkus-qute 3.33.3.redhat-00005
    fixed: vendor fix RHSA-2026:63302
  • Red Hat build of Quarkus 3.27.5.SP1 quarkus-qute 3.27.5.redhat-00004
    fixed: vendor fix RHSA-2026:62515
  • Red Hat build of Quarkus 3.33.3.SP1 quarkus-qute 3.33.3.redhat-00005
    fixed: vendor fix RHSA-2026:62555
  • Red Hat Build of Apache Camel 3.33.3.SP1 jimfs 1.1, jna 5.8.0, bcel 6.7.0, gax 2.74.1, icu4j 78.2, joni 2.2.6, +1618 more Red Hat build of Apache Camel 4 for Quarkus 3 camel-quarkus-qute, camel-quarkus-qute-component Red Hat build of Quarkus 3.27.5.SP1 jna 5.8.0, db2 1.21.4, h2 2.3.230, y18n 5.0.8, cliui 8.0.1, guice 5.1.0, +1009 more Red Hat build of Quarkus 3.33.3.SP1 jna 5.8.0, h2 2.4.240, y18n 5.0.8, cliui 8.0.1, guice 5.1.0, wasm 2.15.3, +1018 more Red Hat JBoss Enterprise Application Platform Expansion Pack quarkus-qute, camel-quarkus-qute, camel-quarkus-qute-component
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 mo ago

Exploit prediction

0.97% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Quarkus quarkus-qute
  • Red Hat Red Hat Build of Apache Camel 3.33.3.SP1
  • Red Hat Red Hat build of Quarkus 3.27.5.SP1
  • Red Hat Red Hat build of Quarkus 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

Classification

Weakness
  • CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.