jackson-databind: Renamed @JsonIgnore’d setters can deserialize via private fields_CVE-2026-54516

{
    "lastseen": "",
    "description": "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, POJOPropertiesCollector._renameProperties() allows a property with @JsonProperty(\"renamed\") on the getter and @JsonIgnore on the setter to be renamed rather than dropped. With MapperFeature.INFER_PROPERTY_MUTATORS enabled (default), the private backing field is retained; during deserialization BeanDeserializerFactory.addBeanProps() sees hasField()==true, builds a FieldProperty, and makes the backing field writable. An attacker supplying the renamed JSON key writes the backing field directly, bypassing the @JsonIgnore on the setter. This vulnerability is fixed in 3.1.4.",
    "published": "2026-06-23T20:48:52.730Z",
    "modified": "2026-06-23T20:48:52.730Z",
    "type": "cve",
    "title": "jackson-databind: Renamed @JsonIgnore'd setters can deserialize via private fields",
    "source": "GitHub_M",
    "references": "https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-9fxm-vc8v-hj55\nhttps://github.com/FasterXML/jackson-databind/pull/5967\nhttps://github.com/FasterXML/jackson-databind/pull/5968\nhttps://github.com/FasterXML/jackson-databind/commit/c3d56dd25d52319828147c5b9aeabf2d485c250a\nhttps://github.com/FasterXML/jackson-databind/commit/e88cb17006b6af4883b973058f0bb6486e5074af",
    "id": "CVE-2026-54516",
    "bulletinFamily": "",
    "cwe": [
        "CWE-915"
    ],
    "cvelist": null,
    "sourceData": "FasterXML jackson-databind >= 2.21.0, < 2.21.4\nFasterXML jackson-databind >= 3.0.0, < 3.1.4",
    "sourceHref": "",
    "cvss": {
        "score": 5.3,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
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        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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            "baseScore": 0,
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "jackson-databind",
    "version": ">= 2.21.0, < 2.21.4",
    "vendor": "FasterXML",
    "ai_description": "",
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    "ai_score": 0
}