CVE-2026-54515 - jackson-databind: Case-insensitive deserialization bypasses per-property @JsonIgnoreProperties

CVE-2026-54515 - jackson-databind: Case-insensitive deserialization bypasses per-property @JsonIgnoreProperties

https://cvefeed.io/rssfeed/latest.atom / Wed, 06/24/2026 - 01:01
CVE ID :CVE-2026-54515
Published : June 23, 2026, 8:50 p.m. | 50 minutes ago
Description :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. The ignored property becomes writable again. This vulnerability is fixed in 2.18.9, 2.21.5, and 3.1.4.
Severity: 0.0 | NA
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