CVE-2026-86512 java-json-tools json-patch Copy Move Operations CopyOperation.java MoveOperation.apply access control
Attackers can bypass access controls in json-patch copy and move operations to modify data, requiring immediate attention from developers using this library.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86512?
CVE-2026-86512 is a medium-severity missing authorization vulnerability in java-json-tools json-patch, published on 8 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was identified in java-json-tools json-patch up to 1.13. This affects the function CopyOperation.apply/MoveOperation.apply of the file src/main/java/com/github/fge/jsonpatch/CopyOperation.java of the component Copy Move Operations. The manipulation leads to improper access controls. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-86512?
How do I fix CVE-2026-86512?
No fix has been published for CVE-2026-86512 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-86512 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86512 exists.
Sources
Also known as GHSA-3pg6-r94f-fcvh.