Medium [CVE-2026-59888] com.fasterxml.jackson.core/jackson-databind: tools.jackson.core/jackson-databind: jackson-databind: @JsonIgnore bypass in Java Records
This medium-severity Red Hat Linux advisory covers CVE-2026-59888 affecting Red Hat Lightspeed (formerly Insights) for Runtimes 1.0, Red Hat OpenShift Dev Spaces 3.30, OpenShift Serverless.
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Summary
jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor.
From 2.15.0 until 2.18.8, 2.21.4, and 3.1.4, Java Records using a PropertyNamingStrategy can bypass @JsonIgnore because POJOPropertiesCollector._removeUnwantedIgnorals() records an ignored component under its original implicit name before _renameUsing() applies the naming strategy, allowing the renamed JSON key to be assigned to the Record constructor parameter.
This issue is fixed in versions 2.18.8, 2.21.4, and 3.1.4. Consequently, an untrusted client could set internal or privileged components from external input, potentially leading to unauthorized modification or disclosure of sensitive data.
Moderate impact. This flaw in jackson-databind allows an attacker to bypass the @JsonIgnore annotation when deserializing Java Records that utilize a PropertyNamingStrategy.
Red Hat products using affected versions of jackson-databind for deserialization of external input into Java Records with PropertyNamingStrategy are susceptible. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N).
Weakness: CWE-915.
Affected products named by the advisory: Red Hat Lightspeed (formerly Insights) for Runtimes 1.0; Red Hat OpenShift Dev Spaces 3.30; OpenShift Serverless; Red Hat AI Inference Server; and 10 more.
- < 2.15.0
- < 2.18.8
- < 2.21.4
- < 3.1.4
Official advisory · high-confidence parse· fetched 9 days ago·verify at source
- 2.18.8
- 2.21.4
- 3.1.4
- rh-lightspeed-runtimes/runtimes-agent-init-rhel9:1786378722
- devspaces/openvsx-rhel9:1787759145
- devspaces/pluginregistry-rhel9:1787759723
- devspaces/server-rhel9:1787757597
- RHSA-2026:54440
- RHSA-2026:62260
Official advisory · high-confidence parse· fetched 9 days ago·verify at source
Mitigation
Upgrade to a fixed release: 2.18.8, 2.21.4, 3.1.4, rh-lightspeed-runtimes/runtimes-agent-init-rhel9:1786378722, devspaces/openvsx-rhel9:1787759145, devspaces/pluginregistry-rhel9:1787759723. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 9 days ago·verify at source
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