Vulnerability · Published Sep 7, 2026 · Assigned by VulDB

CVE-2026-86319java-json-tools json-patch Patch Operation JsonPatch.java JsonPatch.apply resource consumption

Medium 5.3

In plain English

A medium-severity uncontrolled resource consumption in json-patch from java-json-tools. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.7%top 46.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability has been found in java-json-tools json-patch up to 1.13. Affected by this vulnerability is the function JsonPatch.apply of the file src/main/java/com/github/fge/jsonpatch/JsonPatch.java of the component Patch Operation Handler. The manipulation leads to resource consumption. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products (as reported)

Vendor	Product	Versions
java-json-tools	json-patch	1.01.11.21.31.41.51.61.7

Weakness: CWE-400, CWE-404 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

References

VDB-399510 | java-json-tools json-patch Patch Operation JsonPatch.java JsonPatch.apply resource consumption vdb-entry, technical-description
VDB-399510 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-86319 | CVE Analysis and Report third-party-advisory
Submit #908321 | java-json-tools json-patch 1.13 Denial of Service via Unbounded Patch Operations and deepCopy third-party-advisory
https://github.com/java-json-tools/json-patch/issues/167 exploit, issue-tracking, patch
https://github.com/java-json-tools/json-patch/ patch, product