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CVE-2026-59888 is a deserialization annotation bypass in jackson-databind affecting Java Records that use a PropertyNamingStrategy. POJOPropertiesCollector._removeUnwantedIgnorals() tracks an ignored Record component under its original implicit name before _renameUsing() applies the naming strategy. Consequently, a JSON key using the transformed name can bind to the Record constructor parameter despite @JsonIgnore. The vulnerability affects releases beginning with 2.15.0 and is fixed in the applicable maintenance branches by versions 2.18.8, 2.21.4, and 3.1.4.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
23 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A medium-severity Jackson Databind vulnerability in which Java Records using a PropertyNamingStrategy can bypass @JsonIgnore, allowing a renamed JSON property to be bound to a Record constructor parameter.
@JsonIgnore bypass in Jackson-databind when handling Java Records.
An authorization and data-binding bypass in jackson-databind where Java Records using a PropertyNamingStrategy can circumvent @JsonIgnore, allowing attacker-controlled renamed JSON keys to populate ignored Record constructor parameters.
A vulnerability in jackson-databind addressed by updating to version 2.21.5.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.