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CVE-2026-86511— java-json-tools jackson-coreutils JacksonUtils.java BigDecimal.toPlainString resource consumption

Quick assessment

Affected
java-json-tools jackson-coreutils
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.

在 java-json-tools 的 jackson-coreutils 2.0 中发现了漏洞。该漏洞影响的是位于 文件中 函数。执行特定操作会导致资源过度消耗（即资源消耗型 DoS 攻击）。此漏洞可被远程触发。该漏洞的利用方式已被公开，可能被用于实际攻击。项目组已通过 issue 报告提前获知该问题，但截至目前尚未作出回应。

CVSS 5.3 · Medium

Possible ATT&CK Techniques 1 AI

T1480 · Execution Guardrails
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I. Basic Information for CVE-2026-86511

Vulnerability Information
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Vulnerability Title
java-json-tools jackson-coreutils JacksonUtils.java BigDecimal.toPlainString resource consumption
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in java-json-tools jackson-coreutils 2.0. Affected by this vulnerability is the function BigDecimal.toPlainString of the file src/main/java/com/github/fge/jackson/JacksonUtils.java. Performing a manipulation results in resource consumption. The attack may be initiated remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
java-json-tools jackson-coreutils 2.0 cpe:2.3:a:java-json-tools:jackson-coreutils:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-86511

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III. Intelligence Information for CVE-2026-86511

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Security Blog Posts for CVE-2026-86511 (1)

Other References for CVE-2026-86511 (1)

Same Patch Batch · java-json-tools · 2026-09-08 · 3 CVEs total

CVE-2026-86512 6.3 MEDIUM java-json-tools json-patch Copy Move Operations CopyOperation.java MoveOperation.apply acc
CVE-2026-86513 5.3 MEDIUM java-json-tools jackson-coreutils JSON Pointer parser TreePointer.java TreePointer.tokensF

IV. Related Vulnerabilities

Same product: jackson-coreutils
Same vendor: java-json-tools
Same weakness: CWE-400

V. Comments for CVE-2026-86511

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