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Back to active CVEs
High · CVSS 8.8CVE-2026-12894

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

Answer in brief

CVE-2026-12894 records a High severity (CVSS 8.8) vulnerability in Io.quarkus:quarkus-qute: quarkus-qute:server-side template injection (ssti) vulnerability in reflectionvalueresolver of the quarkus qute template engine. The current sources do not mark it as known exploited. The current feed maps Quarkus/io.quarkus:quarkus-qute (generic), Red Hat/quarkus-qute (generic), Quarkus/quarkus-qute (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 31, 2026Updated Oct 12, 2026Source checked Oct 19, 2026First seen by HOL Aug 31, 2026Material review Oct 12, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-1336
Source
CVE List V5
Source checked
Oct 19, 2026
References
5 linked sources
Open source record

Key facts

Risk
High · CVSS 8.8
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Quarkus/io.quarkus:quarkus-qute (generic), Red Hat/quarkus-qute (generic), Quarkus/quarkus-qute (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Quarkus/io.quarkus:quarkus-qutegeneric>=3.27.0 <3.27.5.SP1 || >=3.33.0 <3.33.3.SP13.27.5.SP1, 3.33.3.SP1
Red Hat/quarkus-qutegeneric*Not reported
Quarkus/quarkus-qutegeneric>=3.27.0 <3.27.5.SP1 || >=3.33.0 <3.33.3.SP13.27.5.SP1, 3.33.3.SP1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Quarkus/io.quarkus:quarkus-qute, Red Hat/quarkus-qute, Quarkus/quarkus-qute.
  2. 2Review the reported fix. Source-reported workaround: Applications utilizing the Quarkus Qute template engine should ensure that untrusted input is not directly incorporated into template content. Restricting access to the application's template rendering functionality to trusted sources can reduce the attack surface.

Evidence timeline and material changes

  1. Published upstream

    Aug 31, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 12, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 31, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.