CVE-2026-54515

MediumCVSS 5.3/10Last modified Oct 25, 2026

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-915

Affected software

Vendor	Product	Versions
FasterXML	jackson-databind	>= 2.8.0, < 2.18.9; >= 2.19.0, < 2.21.5; >= 3.1.0, < 3.1.4

References

https://github.com/FasterXML/jackson-databind/commit/0e1b0b211f7a53baa62ba2f4c9bd006c7bf4d5faPatch
https://github.com/FasterXML/jackson-databind/issues/5962Issue Tracking
https://github.com/FasterXML/jackson-databind/issues/5964Issue Tracking, Patch
https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-5jmj-h7xm-6q6vThird Party Advisory

Timeline

Published: Jun 23, 2026
Last modified: Oct 25, 2026
NVD status: Analyzed

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