Medium [CVE-2026-54517] Information disclosure via improper JsonView filter application
This medium-severity Red Hat Linux advisory covers CVE-2026-54517 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 2.21.0 until 2.21.4 and 3.1.4, in BeanDeserializer._deserializeUsingPropertyBased, the active-view (@JsonView) filter was applied only to creator properties; the regular property-buffering branch performed no prop.visibleInView(activeView) check.
A change making SetterlessProperty.isMerging() return true routed setterless Collection/Map properties through this unguarded path, so a setterless collection annotated with a restricted @JsonView is populated from attacker JSON even when the active view excludes it. This vulnerability is fixed in 2.21.4 and 3.1.4.
A remote attacker can exploit this vulnerability due to an issue in how active-view (@JsonView) filters are applied. This can lead to information disclosure, allowing an attacker to access data that should otherwise be restricted.
Moderate: A flaw in jackson-databind allows for information disclosure and an access-control bypass. This occurs because the `@JsonView` filter, intended to restrict data visibility, is not correctly applied to setterless collection and map properties during deserialization.
An attacker could exploit this to populate view-restricted properties from untrusted JSON, potentially accessing sensitive data that should be excluded by the active view.
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
- 2.21.4
- 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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