Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-86318
java-json-tools json-patch JsonMergePatchDeserializer.java JsonMergePatch.fromJson stack-based overflow
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L N N N N N L 5.5 .0076 53.6 —
AFFECTED
Product Versions Fixed
json-patch 1.0 – —
TIMELINE
Sep 7 Reserved by VulDB
Sep 7 Published (CNA: VulDB)
Sep 8 EXPLOIT PUBLISHED — CVE-2026-86318 (java-json-tools json-patch). Public exploit reference added.
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| September 7, 2026 | Reserved | Reserved by VulDB |
| September 7, 2026 | Published | Published (CNA: VulDB) |
| September 8, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-86318 (java-json-tools json-patch). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| java-json-tools | json-patch | — | 1.0 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-86318 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
