RHSA-2026:90311

Vulnerability from csaf_redhat - Published: 2026-10-27 14:15 - Updated: 2026-10-30 07:11
Summary
Red Hat Security Advisory: Red Hat build of Quarkus 3.33.4.SP1 release and security update
Severity
Important
Notes
Topic: An update is now available for Red Hat build of Quarkus. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability. For more information, see the CVE links in the References section.
Details: This release of Red Hat build of Quarkus 3.33.4.SP1 includes the following CVE fix: * jackson-databind: Jackson-databind: PolymorphicTypeValidator bypass via generic type arguments and array element types in jackson-databind allows arbitrary class instantiation (incomplete fix for CVE-2026-54512) [quarkus-3.33] (CVE-2026-110879) For more information, see the release notes page listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2026-110879

PolymorphicTypeValidator bypass via generic type arguments and array element types in jackson-databind allows arbitrary class instantiation (incomplete fix for CVE-2026-54512) [CVE-2026-110879]

8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-1035 - CWE-1035
Affected products
Product Identifier Version Remediation
Red Hat build of Quarkus 3.33.4.SP1
Red Hat / Red Hat build of Quarkus
 cpe:/a:redhat:quarkus:3.33 —
Vendor Fix fix
Workaround
Threats
Impact Important
References
To clipboard 

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        "text": "An update is now available for Red Hat build of Quarkus.\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability. For more information, see the CVE links in the References section.",
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          "text": "PolymorphicTypeValidator bypass via generic type arguments and array element types in jackson-databind allows arbitrary class instantiation (incomplete fix for CVE-2026-54512) [CVE-2026-110879]",
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          "text": "jackson-databind: com.fasterxml.jackson.core/jackson-databind: tools.jackson.core/jackson-databind: Jackson-databind: PolymorphicTypeValidator bypass via generic type arguments and array element types in jackson-databind allows arbitrary class instantiation (incomplete fix for CV",
          "title": "Vulnerability summary"
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          "text": "Red Hat has evaluated this vulnerability as an Important severity flaw because successful remote exploitation can result in arbitrary class instantiation and code execution, though it requires specific non-default deserialization patterns. For an application to be vulnerable, polymorphic type validation must be configured to process untrusted input with class-name identifiers, and exploitable gadget classes must exist on the classpath. In standard Red Hat product configurations, permissive class-name polymorphism is not enabled by default on external interfaces, significantly limiting exposure in typical production environments.",
          "title": "Statement"
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        {
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          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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      "title": "jackson-databind: com.fasterxml.jackson.core/jackson-databind: tools.jackson.core/jackson-databind: Jackson-databind: PolymorphicTypeValidator bypass via generic type arguments and array element types in jackson-databind allows arbitrary class instantiation (incomplete fix for CV"
    }
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}



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