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CVE-2026-86512: Improper Access Controls in java-json-tools json-patch

0
Medium
VulnerabilityCVE-2026-86512cvecve-2026-86512
Published: 09/08/2026 (09/08/2026, 02:15:13 UTC)
Source: CVE Database V5
Vendor/Project: java-json-tools
Product: json-patch

Description

CVE-2026-86512 is a medium severity vulnerability in the java-json-tools json-patch library up to version 1.13. It affects the CopyOperation.apply and MoveOperation.apply functions, leading to improper access controls. The vulnerability allows remote exploitation without user interaction and requires low attack complexity and low privileges. Exploit code is publicly available. The vendor has not yet responded or provided a fix.

CVSS v4.0

Score 5.3medium

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
Low
Vuln. Integrity
Low
Vuln. Availability
Low
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Affected software

com.github.java-json-tools/json-patch
pkg:maven/com.github.java-json-tools/json-patch
Affected versions
=1.0=1.1=1.2=1.3=1.4=1.5=1.6=1.7=1.8=1.9=1.10=1.11=1.12=1.13
CPE configurations
cpe:2.3:a:java-json-tools:json-patch:*:*:*:*:*:*:*:*

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 09/08/2026, 02:52:52 UTC

Technical Analysis

This vulnerability in java-json-tools json-patch (up to version 1.13) involves improper access controls in the CopyOperation.apply and MoveOperation.apply methods within the Copy Move Operations component. The flaw allows remote attackers to exploit these functions to bypass intended access restrictions. The vulnerability has a CVSS 4.0 score of 5.3 (medium severity) with network attack vector, low complexity, no privileges required, and no user interaction needed. Although the issue was reported early, no official remediation or patch has been released, and public exploit code exists.

Potential Impact

Exploitation of this vulnerability can lead to unauthorized access or manipulation of JSON data via the affected copy and move operations. This could compromise data integrity or confidentiality depending on the application context. The vulnerability is remotely exploitable with low complexity and minimal privileges, increasing the risk of unauthorized actions within affected systems.

Mitigation Recommendations

No official fix or patch is currently available from the vendor. Users should monitor the vendor's communications for updates. Until a patch is released, consider restricting access to services using the vulnerable versions of json-patch and applying additional access controls at the application or network level to limit exposure.

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Technical Details

Data Version
5.2
Assigner Short Name
VulDB
Date Reserved
2026-09-07T19:06:36.411Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a9f74f7acd9273b49d8b1d3

Added to database: 09/08/2026, 02:37:43 UTC

Last enriched: 09/08/2026, 02:52:52 UTC

Last updated: 09/08/2026, 03:00:40 UTC

Views: 4

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