CVE-2026-86318
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductJava-json-tools Json-patch
PublishedSep 7, 2026
First seenSep 7, 2026
Weakness typeCWE-121CWE-121CWE-119Memory buffer bounds error
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| java-json-tools json-patch | 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 | — |
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