CVE-2026-54518 Security Details

CVE ID

CVE-2026-54518

CWE

CWE-863

CVE Description

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, UnwrappedPropertyHandler.processUnwrappedCreatorProperties() replays buffered JSON into creator parameters but never consults prop.visibleInView(activeView). The normal property-based creator path gates creator properties on the active view, but this unwrapped-creator replay path bypasses that check, so a constructor parameter annotated with both @JsonView(AdminView.class) and @JsonUnwrapped is populated from attacker JSON even when a more restrictive view is active. This vulnerability is fixed in 2.21.4 and 3.1.4.

Published

Jun 16, 2026

CVSS Score & Severity

6.9Medium

CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS Score

0.354%

Malware

malware

KEV Status

Not in KEV Catalog: No known exploits

Vulnerable Methods

com/fasterxml/jackson/databind/deser/impl/UnwrappedPropertyHandler.processUnwrappedCreatorProperties(Lcom/fasterxml/jackson/core/JsonParser;Lcom/fasterxml/jackson/databind/DeserializationContext;Lcom/fasterxml/jackson/databind/deser/impl/PropertyValueBuffer;Lcom/fasterxml/jackson/databind/util/TokenBuffer;)Lcom/fasterxml/jackson/databind/deser/impl/PropertyValueBuffer;

JVMVulnerable params: 1

tools/jackson/databind/deser/impl/UnwrappedPropertyHandler.processUnwrappedCreatorProperties(Ltools/jackson/core/JsonParser;Ltools/jackson/databind/DeserializationContext;Ltools/jackson/databind/deser/bean/PropertyValueBuffer;Ltools/jackson/databind/util/TokenBuffer;)Ltools/jackson/databind/deser/bean/PropertyValueBuffer;

JVMVulnerable params: 1

Affected Ecosystems

affected

Source

National Vulnerability Database

References

fedoraproject.orgPROJECT

GitHub · FasterXML/jackson-databindPROJECT