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CVE-2026-29062— jackson-core: Nesting Depth Constraint Bypass in `UTF8DataInputJsonParser` potentially allowing Resource Exhaustion

Quick assessment

Affected
FasterXML jackson-core
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-core是FasterXML开源的一个API软件。 FasterXML jackson-core 3.0.0至3.1.0之前版本存在安全漏洞，该漏洞源于解析JSON时绕过嵌套深度限制，可能导致栈溢出和拒绝服务。

AI Predicted 7.5 Difficulty: Easy EPSS 0.55% · P44

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
FasterXML jackson-core >= 3.0.0, < 3.1.0 affected
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I. Basic Information for CVE-2026-29062

Vulnerability Information
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Vulnerability Title
jackson-core: Nesting Depth Constraint Bypass in `UTF8DataInputJsonParser` potentially allowing Resource Exhaustion
Source: CVE Program / CVE List V5
Vulnerability Description
jackson-core contains core low-level incremental ("streaming") parser and generator abstractions used by Jackson Data Processor. From version 3.0.0 to before version 3.1.0, the UTF8DataInputJsonParser, which is used when parsing from a java.io.DataInput source, bypasses the maxNestingDepth constraint (default: 500) defined in StreamReadConstraints. A similar issue was found in ReaderBasedJsonParser. This allows a user to supply a JSON document with excessive nesting, which can cause a StackOverflowError when the structure is processed, leading to a Denial of Service (DoS). This issue has been patched in version 3.1.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
FasterXML jackson-core 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FasterXML jackson-core是FasterXML开源的一个API软件。 FasterXML jackson-core 3.0.0至3.1.0之前版本存在安全漏洞，该漏洞源于解析JSON时绕过嵌套深度限制，可能导致栈溢出和拒绝服务。
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-core >= 3.0.0, < 3.1.0 -

II. Public POCs for CVE-2026-29062

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III. Intelligence Information for CVE-2026-29062

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Patches & Fixes for CVE-2026-29062 (2)

Vendor Advisories for CVE-2026-29062 (1)

IV. Related Vulnerabilities

Same product: jackson-core
Same vendor: FasterXML
Same weakness: CWE-770

V. Comments for CVE-2026-29062

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