CVE-2026-86512: Improper Access Controls in java-json-tools 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 involves improper access controls in the CopyOperation.apply and MoveOperation.apply functions, which could be exploited remotely. The vulnerability allows unauthorized manipulation due to insufficient access control enforcement. Although an exploit is publicly available, there is no vendor response or patch at this time.
CVSS v4.0
Score 5.3medium
Affected software
pkg:maven/com.github.java-json-tools/json-patchRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the java-json-tools json-patch library versions up to 1.13, specifically in the CopyOperation.apply and MoveOperation.apply methods within the Copy Move Operations component. The flaw results from improper access control, potentially allowing remote attackers to manipulate JSON patch operations without proper authorization. The issue was reported early to the project, but no fix or official response has been provided. The CVSS 3.1 base score is 5.3 (medium), reflecting network attack vector, low attack complexity, no privileges required, no user interaction, and limited impact on confidentiality, integrity, and availability.
Potential Impact
The vulnerability allows remote attackers to exploit improper access controls in JSON patch operations, potentially leading to unauthorized manipulation of JSON data. The impact is limited to the scope of the affected functions and does not include privilege escalation or denial of service. No known active exploitation in the wild has been reported.
Mitigation Recommendations
No official fix or patch is currently available from the vendor. Users should monitor the project for updates or consider alternative libraries until a remediation is provided. Applying strict access controls at the application level around JSON patch usage may reduce exposure.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-3pg6-r94f-fcvh
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-86512"]
- Database Specific Severity
- LOW
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9f9103acd9273b49ff22f6
Added to database: 09/08/2026, 04:37:23 UTC
Last enriched: 09/29/2026, 05:20:02 UTC
Last updated: 10/23/2026, 15:12:04 UTC
Views: 65
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.