Medium [CVE-2026-54515] Ignored properties can be unexpectedly modified
This medium-severity Red Hat Linux advisory covers CVE-2026-54515 affecting Cryostat 4, OpenShift Developer Tools and Services, OpenShift Serverless.
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Summary
jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor.
From 2.8.0 until 2.18.9, 2.21.5, and 3.1.4, in BeanDeserializerBase.createContextual(), per-property @JsonIgnoreProperties exclusions are applied by _handleByNameInclusion(), producing a contextual deserializer whose BeanPropertyMap has the ignored properties removed.
The subsequent per-property case-insensitivity block (triggered by @JsonFormat(ACCEPT_CASE_INSENSITIVE_PROPERTIES)) rebuilds from this._beanProperties (the original, unfiltered map) instead of contextual._beanProperties, then overwrites the filtered map — restoring every property _handleByNameInclusion had just removed.
This vulnerability is fixed in 2.18.9, 2.21.5, and 3.1.4. This vulnerability occurs in the data-binding functionality where properties intended to be ignored are incorrectly restored and become writable again.
An attacker could potentially exploit this by providing input that modifies data through these supposedly ignored properties. This could lead to unintended changes in application data, impacting data integrity.
This is a Moderate impact flaw in jackson-databind where applications enabling case-insensitive property matching alongside per-property @JsonIgnoreProperties may inadvertently expose fields to unauthorized modification.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
- 2.18.9
- 2.21.5
- 3.1.4
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
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