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Fencer Vulns
medium 5.3

CVE-2026-54516 json

jackson-databind: Renamed @JsonIgnore'd setters can deserialize via private fields

published 2026-06-23 4 mo ago modified 2026-10-25 14 d ago also GHSA-9fxm-vc8v-hj55 , EUVD-2026-38590

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.21.0 until 2.21.4 and 3.1.4, POJOPropertiesCollector._renameProperties() allows a property with @JsonProperty("renamed") on the getter and @JsonIgnore on the setter to be renamed rather than dropped. With MapperFeature.INFER_PROPERTY_MUTATORS enabled (default), the private backing field is retained; during deserialization BeanDeserializerFactory.addBeanProps() sees hasField()==true, builds a FieldProperty, and makes the backing field writable. An attacker supplying the renamed JSON key writes the backing field directly, bypassing the @JsonIgnore on the setter. This vulnerability is fixed in 3.1.4.

Patch / fix

  • maven com.fasterxml.jackson.core:jackson-databind 2.21.4, 3.1.4
  • maven tools.jackson.core:jackson-databind 3.1.4
  • fasterxml jackson-databind 2.21.4, 3.1.4

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-2026-54516 updated cvss 5.3

jackson-databind: jackson-databind: Security bypass due to improper handling of renamed properties

  • Red Hat Cryostat 4 jackson-databind Red Hat OpenShift Developer Tools and Services jenkins, jenkins-2-plugins, ocp-tools-4/jenkins-rhel8, ocp-tools-4/jenkins-rhel9 Red Hat OpenShift Serverless openshift-serverless-1/kn-ekb-receiver-rhel9, openshift-serverless-1/kn-ekb-dispatcher-rhel9, openshift-serverless-1/kn-eventing-integrations-log-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-s3-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-sns-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-sqs-sink-rhel9, +4 more Red Hat AMQ Broker 7 jackson-databind Red Hat AMQ Clients jackson-databind Red Hat Ansible Automation Platform 2 python-drools-jpy-jar, python3x-drools-jpy-jar, python3.11-drools-jpy-jar, python3.12-drools-jpy-jar, ansible-automation-platform-27/de-minimal-rhel9, ansible-automation-platform-27/de-supported-rhel9
    +18 more products
    Red Hat build of Apache Camel - HawtIO 4 jackson-databind Red Hat build of Apache Camel for Spring Boot 4 jackson-databind Red Hat build of Apicurio Registry 3 jackson-databind Red Hat build of Debezium 3 jackson-databind Red Hat Build of Keycloak jackson-databind, rhbk-rhel9-operator, rhbk/keycloak-rhel9, rhbk-openshift-rhel9, rhbk/keycloak-rhel9-operator Red Hat Certificate System 10 redhat-pki Red Hat Data Grid 8 jackson-databind Red Hat Fuse 7 jackson-databind Red Hat JBoss Enterprise Application Platform 7 jackson-databind, eap74-els-openjdk8-openshift-rhel8, eap74-els-openjdk11-openshift-rhel8, eap74-els-openjdk17-openshift-rhel8, jboss-eap-7/eap74-els-openjdk8-openshift-rhel8, jboss-eap-7/eap74-els-openjdk17-openshift-rhel8 Red Hat JBoss Enterprise Application Platform 8 jackson-databind Red Hat JBoss Enterprise Application Platform Expansion Pack jackson-databind Red Hat Lightspeed for Runtimes Operator rh-lightspeed-runtimes/runtimes-agent-init-rhel9 Red Hat Offline Knowledge Portal offline-knowledge-portal/rhokp-rhel9 Red Hat OpenShift Dev Spaces devspaces/server-rhel9, devspaces/openvsx-rhel9, devspaces/pluginregistry-rhel9, devspaces/multicluster-redirector-rhel9 Red Hat Satellite 6 candlepin, puppetserver, openvox-server, candlepin-selinux Red Hat Single Sign-On 7 jackson-databind Red Hat streams for Apache Kafka 2 jackson-databind Red Hat streams for Apache Kafka 3 jackson-databind
    affected: workaround, no fix available “Fix deferred”
  • Red Hat build of Quarkus 3.27.4.SP2 jackson-databind 2.21.4.redhat-00002
    fixed: vendor fix RHSA-2026:36002
  • Red Hat build of Quarkus 3.33.2.SP2 jackson-databind 2.21.4.redhat-00002
    fixed: vendor fix RHSA-2026:36013
  • Red Hat AI Inference Server rhaii/vllm-gaudi-rhel9, rhaiis/vllm-cuda-rhel9 Red Hat build of Apache Camel 4 for Quarkus 3 jackson-databind Red Hat build of Quarkus 3.27.4.SP2 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 3.33.2.SP2 jna 5.8.0, bson 5.6.4, h2 2.4.240, y18n 5.0.8, cliui 8.0.1, guice 5.1.0, +1018 more Red Hat Enterprise Linux 8 jackson-databind, jackson-databind-javadoc Red Hat Enterprise Linux 9 jackson-databind, pki-jackson-databind
    +3 more products
    Red Hat Enterprise Linux 10 dogtag-pki Red Hat Enterprise Linux AI (RHEL AI) 3 rhelai3/bootc-gaudi-rhel9 Red Hat OpenShift AI (RHOAI) rhoai/odh-modelmesh-rhel9, rhoai/odh-vllm-gaudi-rhel9, rhoai/odh-spark-operator-rhel9, rhoai/odh-trustyai-service-rhel9, rhoai/odh-th06-cpu-torch210-py312-rhel9, rhoai/odh-th06-cpu-torch291-py312-rhel9, +15 more
    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
yes
Technical impact
partial
Assessed
4 mo ago

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
maven com.fasterxml.jackson.core:jackson-databind
>=2.21.0, <2.21.4
>=3.0.0, <3.1.4
2.21.4
3.1.4
maven tools.jackson.core:jackson-databind
>=3.0.0, <3.1.4
3.1.4

Affected products

  • FasterXML jackson-databind

Classification

Weakness
  • CWE-915 Improperly Controlled Modification of Dynamically-Determined Object Attributes

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.