jackson-databind: Renamed @JsonIgnore'd setters can deserialize via private fields
Priority LOW 30CWE-915Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Partial Red Hat: 2 fixed, 24 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-915.
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00449 39th percentileScored 2026-11-07
Fix Partial jackson-databind (FasterXML): 2.21.4, 3.1.4com.fasterxml.jackson.core:jackson-databind (Maven): 2.21.4, 3.1.4+1 more productRed Hat: 2 advisoriesRed Hat: 2 fixed, 24 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| FasterXML | jackson-databind | 2.21.0 to before 2.21.4; 3.0.0 to before 3.1.4 | 2.21.4, 3.1.4 | Patch available | CNA |
| — | com.fasterxml.jackson.core:jackson-databind (Maven) | 2.21.0 to before 2.21.4 | 2.21.4 | Patch available | GHSA-9fxm-vc8v-hj55 |
| — | com.fasterxml.jackson.core:jackson-databind (Maven) | 3.0.0 to before 3.1.4 | 3.1.4 | Patch available | GHSA-9fxm-vc8v-hj55 |
| — | tools.jackson.core:jackson-databind (Maven) | 3.0.0 to before 3.1.4 | 3.1.4 | Patch available | GHSA-9fxm-vc8v-hj55 |
- jackson-databind VendorFasterXML Affected 2.21.0 to before 2.21.4; 3.0.0 to before 3.1.4 Fixed in 2.21.4, 3.1.4 Patch available CNA
- com.fasterxml.jackson.core:jackson-databind (Maven) Vendor— Affected 2.21.0 to before 2.21.4 Fixed in 2.21.4 Patch available GHSA-9fxm-vc8v-hj55
- com.fasterxml.jackson.core:jackson-databind (Maven) Vendor— Affected 3.0.0 to before 3.1.4 Fixed in 3.1.4 Patch available GHSA-9fxm-vc8v-hj55
- tools.jackson.core:jackson-databind (Maven) Vendor— Affected 3.0.0 to before 3.1.4 Fixed in 3.1.4 Patch available GHSA-9fxm-vc8v-hj55
Remediation
- Fix · CNA jackson-databind (FasterXML) Fixed in 2.21.4, 3.1.4
- Fix · GHSA-9fxm-vc8v-hj55 com.fasterxml.jackson.core:jackson-databind (Maven) Fixed in 2.21.4 Advisory →
- Fix · GHSA-9fxm-vc8v-hj55 com.fasterxml.jackson.core:jackson-databind (Maven) Fixed in 3.1.4 Advisory →
- Fix · GHSA-9fxm-vc8v-hj55 tools.jackson.core:jackson-databind (Maven) Fixed in 3.1.4 Advisory →
Red Hat 2 advisories
- RHSA-2026:36013 Released 2026-07-08 · Red Hat rating ImportantRed Hat build of Quarkus 3.33.2.SP2 security update
- Red Hat build of Quarkus 3.33.2.SP2 com.fasterxml.jackson.core.jackson-databind-2.21.4.redhat-00002.jar, io.micrometer.micrometer-core-1.16.6.redhat-00001.jar, org.keycloak.keycloak-policy-enforcer-26.0.10.redhat-00001.jar
- RHSA-2026:36002 Released 2026-07-08 · Red Hat rating ImportantRed Hat build of Quarkus 3.27.4.SP2 security update
- Red Hat build of Quarkus 3.27.4.SP2 com.fasterxml.jackson.core.jackson-databind-2.21.4.redhat-00002.jar, io.micrometer.micrometer-core-1.14.7.redhat-00002.jar, org.keycloak.keycloak-policy-enforcer-26.0.10.redhat-00001.jar
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Cryostat 4 | Affected | No fix yet: Fix deferred |
| OpenShift Developer Tools and Services | Affected | No fix yet: Fix deferred |
| OpenShift Serverless | Affected | No fix yet: Fix deferred |
| Red Hat AMQ Broker 7 | Affected | No fix yet: Fix deferred |
| Red Hat AMQ Clients | Affected | No fix yet: Fix deferred |
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet: Fix deferred |
| Red Hat Build of Keycloak | Affected | No fix yet: Fix deferred |
| Red Hat Certificate System 10 | Affected | No fix yet: Fix deferred |
| Red Hat Data Grid 8 | Affected | No fix yet: Fix deferred |
| Red Hat Fuse 7 | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Enterprise Application Platform 7 | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Enterprise Application Platform 8 | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Enterprise Application Platform Expansion Pack | Affected | No fix yet: Fix deferred |
| Red Hat Lightspeed for Runtimes Operator | Affected | No fix yet: Fix deferred |
| Red Hat Offline Knowledge Portal | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Dev Spaces | Affected | No fix yet: Fix deferred |
| Red Hat Satellite 6 | Affected | No fix yet: Fix deferred |
| Red Hat Single Sign-On 7 | Affected | No fix yet: Fix deferred |
| Red Hat build of Apache Camel - HawtIO 4 | Affected | No fix yet: Fix deferred |
| Red Hat build of Apache Camel for Spring Boot 4 | Affected | No fix yet: Fix deferred |
| Red Hat build of Apicurio Registry 3 | Affected | No fix yet: Fix deferred |
| Red Hat build of Debezium 3 | Affected | No fix yet: Fix deferred |
| streams for Apache Kafka 2 | Affected | No fix yet: Fix deferred |
| streams for Apache Kafka 3 | Affected | No fix yet: Fix deferred |
| Red Hat build of Quarkus 3.27.4.SP2 | Fixed | RHSA-2026:36002 |
| Red Hat build of Quarkus 3.33.2.SP2 | Fixed | RHSA-2026:36013 |
Not affected: 9 products
- Red Hat AI Inference Server
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Enterprise Linux AI (RHEL AI) 3
- Red Hat OpenShift AI (RHOAI)
- Red Hat build of Apache Camel 4 for Quarkus 3
- Red Hat build of Quarkus 3.27.4.SP2
- Red Hat build of Quarkus 3.33.2.SP2
Timeline
- 2026-10-02 Threatist record created from CVE-2026-54516
- 2026-10-03 Alias added: GHSA-9fxm-vc8v-hj55
- 2026-10-09 Fix available: RHSA-2026:36013 · Red Hat
- 2026-10-09 Fix available: RHSA-2026:36002 · Red Hat
- 2026-10-20 Fix available: Red Hat build of Quarkus 3.27.4.SP2, Red Hat build of Quarkus 3.33.2.SP2 · Red Hat
References
Patch 4
Advisory 2
More FasterXML Jackson-databind vulnerabilities
- TI-2017-12774 FasterXML jackson-databind through 2.8.10 and 2.9.x through 2.9.3 allows unauthenticated… CVSS 3.1CRITICAL 9.8
- TI-2017-05167 Deserialization of untrusted data in FasterXML jackson-databind CVSS 3.1CRITICAL 9.8
- TI-2020-07095 FasterXML jackson-databind 2.0.0 through 2.9.10.2 lacks certain xbean-reflect/JNDI… CVSS 3.1CRITICAL 9.8
- TI-2026-39358 jackson-databind: PolymorphicTypeValidator bypass via generic type parameters allows arbitrary class instantiation CVSS 3.1HIGH 8.1
- TI-2020-08560 A deserialization flaw was discovered in jackson-databind through 2.9.10.4. CVSS 3.1HIGH 8.1
- TI-2020-07635 FasterXML jackson-databind 2.x before 2.9.10.4 mishandles the interaction between… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-54516 · CVE Program
- CVE-2026-54516 · NVD
- FIRST EPSS
- GHSA-9fxm-vc8v-hj55 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-54516 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences