CVE-2026-59888: Fasterxml Jackson-Databind

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Fasterxml Jackson-Databind: from 2.15.0, before 2.18.8 (fixed in 2.18.8); from 2.19.0, before 2.21.4 (fixed in 2.21.4); from 3.0.0, before 3.1.4 (fixed in 3.1.4)

Published 2026-07-14. Last modified 2026-07-15.