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CVE-2026-86318— java-json-tools json-patch JsonMergePatchDeserializer.java JsonMergePatch.fromJson stack-based overflow

Quick assessment

Affected
java-json-tools json-patch
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 库的 json-patch 版本（1.13 及之前版本）中发现一个缺陷，影响 文件中的 函数。该缺陷可能导致基于栈的缓冲区溢出。攻击者可通过远程方式利用此漏洞。相关利用方法已公开，并可能被实际用于攻击。项目方已通过问题报告提前获知该问题，但至今尚未回应。

CVSS 5.3 · Medium

Affected Version Matrix 14

VendorProduct Version RangeStatus
java-json-tools json-patch 1.0 affected
1.1 affected
1.2 affected
1.3 affected
1.4 affected
1.5 affected
1.6 affected
1.7 affected
… +6 more rows
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I. Basic Information for CVE-2026-86318

Vulnerability Information
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Vulnerability Title
java-json-tools json-patch JsonMergePatchDeserializer.java JsonMergePatch.fromJson stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in java-json-tools json-patch up to 1.13. Affected is the function JsonMergePatch.fromJson of the file JsonMergePatchDeserializer.java. Executing a manipulation can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been published and may 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
栈缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
java-json-tools json-patch 1.0 cpe:2.3:a:java-json-tools:json-patch:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-86318

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III. Intelligence Information for CVE-2026-86318

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Patches & Fixes for CVE-2026-86318 (2)

Vendor Advisories for CVE-2026-86318 (1)

Other References for CVE-2026-86318 (3)

Same Patch Batch · java-json-tools · 2026-09-07 · 3 CVEs total

CVE-2026-86319 5.3 MEDIUM java-json-tools json-patch Patch Operation JsonPatch.java JsonPatch.apply resource consump
CVE-2026-86321 5.3 MEDIUM java-json-tools jackson-coreutils URL Validation JsonLoader.java JsonLoader.fromURL server

IV. Related Vulnerabilities

Same product: json-patch
Same vendor: java-json-tools
Same weakness: CWE-121

V. Comments for CVE-2026-86318

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