CVE-2026-12894
Full vulnerability record from the local CVENow database.
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.
Severity
HIGH
CVSS score
8.8
(v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
Published
2026-08-31 13:17:20.753000
Last modified
2026-10-20 05:16:54.387000
View original CVE JSON
{
"id": "CVE-2026-12894",
"sourceIdentifier": "[email protected]",
"published": "2026-08-31T13:17:20.753",
"lastModified": "2026-10-20T05:16:54.387",
"vulnStatus": "Awaiting Analysis",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Quarkus",
"product": "quarkus-qute",
"defaultStatus": "unaffected",
"collectionURL": "https://repo1.maven.org/maven2",
"packageName": "io.quarkus:quarkus-qute",
"versions": [
{
"version": "3.27.0",
"lessThan": "3.27.5.SP1",
"versionType": "semver",
"status": "affected"
},
{
"version": "3.33.0",
"lessThan": "3.33.3.SP1",
"versionType": "semver",
"status": "affected"
}
]
},
{
"vendor": "Red Hat",
"product": "Red Hat Build of Apache Camel 3.33.3.SP1",
"defaultStatus": "affected",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "io.quarkus/quarkus-qute",
"cpes": [
"cpe:/a:redhat:apache_camel_quarkus:3.33"
],
"versions": [
{
"version": "3.33.3.redhat-00005",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
},
{
"vendor": "Red Hat",
"product": "Red Hat build of Quarkus 3.27.5.SP1",
"defaultStatus": "affected",
"collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
"packageName": "io.quarkus/quarkus-qute",
"cpes": [
"cpe:/a:redhat:quarkus:3.27"
],
"versions": [
{
"version": "3.27.5.redhat-00004",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
},
{
"vendor": "Red Hat",
"product": "Red Hat build of Quarkus 3.33.3.SP1",
"defaultStatus": "affected",
"collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
"packageName": "io.quarkus/quarkus-qute",
"cpes": [
"cpe:/a:redhat:quarkus:3.33"
],
"versions": [
{
"version": "3.33.3.redhat-00005",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
},
{
"vendor": "Red Hat",
"product": "Red Hat build of Apache Camel 4 for Quarkus 3",
"defaultStatus": "unaffected",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "camel-quarkus-qute",
"cpes": [
"cpe:/a:redhat:camel_quarkus:3"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat build of Apache Camel 4 for Quarkus 3",
"defaultStatus": "unaffected",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "camel-quarkus-qute-component",
"cpes": [
"cpe:/a:redhat:camel_quarkus:3"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat build of Apache Camel 4 for Quarkus 3",
"defaultStatus": "affected",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "quarkus-qute",
"cpes": [
"cpe:/a:redhat:camel_quarkus:3"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
"defaultStatus": "unaffected",
"collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
"packageName": "camel-quarkus-qute",
"cpes": [
"cpe:/a:redhat:jbosseapxp"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
"defaultStatus": "unaffected",
"collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
"packageName": "camel-quarkus-qute-component",
"cpes": [
"cpe:/a:redhat:jbosseapxp"
]
},
{
"vendor": "Red Hat",
"product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
"defaultStatus": "unaffected",
"collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
"packageName": "quarkus-qute",
"cpes": [
"cpe:/a:redhat:jbosseapxp"
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-08-31T14:32:37.234748Z",
"id": "CVE-2026-12894",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-1336"
}
]
}
],
"references": [
{
"url": "https://access.redhat.com/errata/RHSA-2026:62515",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:62555",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:63302",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2026-12894",
"source": "[email protected]"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2491319",
"source": "[email protected]"
}
]
}