CVE-2026-54515— jackson-databind: Case-insensitive deserialization bypasses per-property @JsonIgnoreProperties
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 2.8.0版本至2.18.9之前版本、2.19.0版本至2.21.5之前版本和3.1.0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BeanDeserializerBase.createContextual()中，_handleByNameInclusion()应用逐属性@JsonIgnoreProperties排除后，后续
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 3
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| FasterXML | jackson-databind | >= 2.8.0, < 2.18.9 |
affected |
>= 2.19.0, < 2.21.5 |
affected | ||
>= 3.1.0, < 3.1.4 |
affected |
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I. Basic Information for CVE-2026-54515
Vulnerability Information
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Vulnerability Title
jackson-databind: Case-insensitive deserialization bypasses per-property @JsonIgnoreProperties
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 2.8.0 until 2.18.9, 2.21.5, and 3.1.4, in BeanDeserializerBase.createContextual(), per-property @JsonIgnoreProperties exclusions are applied by _handleByNameInclusion(), producing a contextual deserializer whose BeanPropertyMap has the ignored properties removed. The subsequent per-property case-insensitivity block (triggered by @JsonFormat(ACCEPT_CASE_INSENSITIVE_PROPERTIES)) rebuilds from this._beanProperties (the original, unfiltered map) instead of contextual._beanProperties, then overwrites the filtered map — restoring every property _handleByNameInclusion had just removed. The ignored property becomes writable again. This vulnerability is fixed in 2.18.9, 2.21.5, 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: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 2.8.0版本至2.18.9之前版本、2.19.0版本至2.21.5之前版本和3.1.0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BeanDeserializerBase.createContextual()中，_handleByNameInclusion()应用逐属性@JsonIgnoreProperties排除后，后续
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 | >= 2.8.0, < 2.18.9 | - |
|
II. Public POCs for CVE-2026-54515
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-54515 (2)
Vendor Advisories for CVE-2026-54515 (2)
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-2026-54516 | 5.3 MEDIUM | jackson-databind: Renamed @JsonIgnore'd setters can deserialize via private fields |
| 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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