CVE-2026-54516— jackson-databind: Renamed @JsonIgnore'd setters can deserialize via private fields
Quick assessment
Affected
FasterXML jackson-databind
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
FasterXML jackson-databind是FasterXML组织开源的其中的一个具有数据绑定功能的组件。 FasterXML jackson-databind 2.21.0版本至2.21.4之前版本和3.0.0版本至3.1.4之前版本存在输入验证错误漏洞，该漏洞源于POJOPropertiesCollector._renameProperties()方法允许getter标注@JsonProperty的重命名属性绕过setter上的@JsonIgnore，通过反序列化使私有字段可写，导致攻击者直
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| FasterXML | jackson-databind | >= 2.21.0, < 2.21.4 |
affected |
>= 3.0.0, < 3.1.4 |
affected |
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I. Basic Information for CVE-2026-54516
Vulnerability Information
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Vulnerability Title
jackson-databind: Renamed @JsonIgnore'd setters can deserialize via private fields
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-915
Source: CVE Program / CVE List V5
Vulnerability Title
FasterXML jackson-databind 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FasterXML jackson-databind是FasterXML组织开源的其中的一个具有数据绑定功能的组件。 FasterXML jackson-databind 2.21.0版本至2.21.4之前版本和3.0.0版本至3.1.4之前版本存在输入验证错误漏洞，该漏洞源于POJOPropertiesCollector._renameProperties()方法允许getter标注@JsonProperty的重命名属性绕过setter上的@JsonIgnore，通过反序列化使私有字段可写，导致攻击者直
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| FasterXML | jackson-databind | >= 2.21.0, < 2.21.4 | - |
|
II. Public POCs for CVE-2026-54516
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-54516 (4)
Vendor Advisories for CVE-2026-54516 (1)
Same Patch Batch · FasterXML · 2026-06-23 · 8 CVEs total
| CVE-2026-54513 | 8.1 HIGH | jackson-databind: Array subtype allowlist bypass in BasicPolymorphicTypeValidator (allowIf |
| CVE-2026-54512 | 8.1 HIGH | jackson-databind: PolymorphicTypeValidator bypass via generic type parameters allows arbit |
| CVE-2026-54518 | 6.5 MEDIUM | jackson-databind: @JsonView bypass for unwrapped creator parameters in jackson-databind |
| CVE-2026-54515 | 5.3 MEDIUM | jackson-databind: Case-insensitive deserialization bypasses per-property @JsonIgnoreProper |
| CVE-2026-54514 | 5.3 MEDIUM | jackson-databind: InetSocketAddress deserialization triggers eager DNS resolution (SSRF) |
| CVE-2026-54517 | 5.3 MEDIUM | jackson-databind: @JsonView bypass for setterless creator properties |
| CVE-2026-50193 | jackson-databind: Deeply nested JsonNode throws StackOverflowError for toString() |
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