CVE-2026-86318

java-json-tools json-patch JsonMergePatchDeserializer.java JsonMergePatch.fromJson stack-based overflow

MEDIUM
5.3
CVSS Score
Published: September 7, 2026 at 02:30 PM UTC
Updated: September 8, 2026 at 02:17 PM UTC
1 product affected across 1 vendorJSON Patch

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.8%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (6)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/399509
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/399509/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-86318
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/908319
ExploitIssue TrackingPatch
Source: cverecord
https://github.com/java-json-tools/json-patch/issues/168

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-121CWE-119

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