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CVE-2026-59888— jackson-databind: @JsonIgnore on a Record property is bypassed with a PropertyNamingStrategy

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存在输入验证错误漏洞，该漏洞源于POJOPropertiesCollector._removeUnwantedIgnorals()在_renameUsing()应用命名策略之前，将忽略的组件记录在其原始隐式名称下，可能导致使用PropertyNamingStrategy的Java Records绕过@JsonIgnore。以下版本受到影响

CVSS 6.5 · Medium EPSS 0.42% · P34

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 3

VendorProduct Version RangeStatus
FasterXML jackson-databind >= 2.15.0, < 2.18.8 affected
>= 2.19.0, < 2.21.4 affected
>= 3.0.0, < 3.1.4 affected
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I. Basic Information for CVE-2026-59888

Vulnerability Information
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Vulnerability Title
jackson-databind: @JsonIgnore on a Record property is bypassed with a PropertyNamingStrategy
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 2.15.0 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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存在输入验证错误漏洞，该漏洞源于POJOPropertiesCollector._removeUnwantedIgnorals()在_renameUsing()应用命名策略之前，将忽略的组件记录在其原始隐式名称下，可能导致使用PropertyNamingStrategy的Java Records绕过@JsonIgnore。以下版本受到影响
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 >= 2.15.0, < 2.18.8 -

II. Public POCs for CVE-2026-59888

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III. Intelligence Information for CVE-2026-59888

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Patches & Fixes for CVE-2026-59888 (3)

Vendor Advisories for CVE-2026-59888 (1)

IV. Related Vulnerabilities

Same product: jackson-databind
Same vendor: FasterXML
Same weakness: CWE-915

V. Comments for CVE-2026-59888

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