Bug 2529484 (CVE-2026-86318)

Summary:	CVE-2026-86318 java-json-tools/json-patch: java-json-tools json-patch: Remote stack-based buffer overflow via JSON manipulation
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	ant, aschwart, aszczucz, avibelli, bgeorges, boliveir, ccranfor, cescoffi, dandread, dkreling, drichtar, ewittman, gmalinko, gsmet, janstey, jmartisk, jpechane, lthon, manderse, mosmerov, mposolda, nipatil, olubyans, pantinor, pdelbell, pesilva, pgallagh, pjindal, probinso, rguimara, rkubis, rmartinc, rruss, rstepani, rsvoboda, sbiarozk, ssilvert, sthorger, tqvarnst, vmuzikar
Target Milestone:	---	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in java-json-tools json-patch. A remote attacker could exploit a stack-based buffer overflow vulnerability in the `JsonMergePatch.fromJson` function by sending specially crafted JSON input. This could lead to a denial of service, making the affected system unavailable.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-09-07 14:41:18 UTC

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.