---
id: CVE-2026-86321
title: A vulnerability was found in java-json-tools jackson-coreutils 2.0
summary: >-
  A vulnerability was found in java-json-tools jackson-coreutils 2.0. Affected
  by this issue is the function JsonLoader.fromURL of the file
  src/main/java/com/github/fge/jackson/JsonLoader.java of the component URL
  Validation. The manipulat…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-918
vendor: java-json-tools
product: jackson-coreutils
affected:
  - jackson-coreutils 2.0
published: '2026-09-07'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T13:17:29.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86321'
references:
  - url: 'https://github.com/java-json-tools/jackson-coreutils/'
    label: cna@vuldb.com
  - url: 'https://github.com/java-json-tools/jackson-coreutils/issues/64'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-86321'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/908323'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/399511'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/399511/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-08T12:47:13.686324Z'
epss: 0.00384
epssPercentile: 0.3233
ingestedAt: '2026-09-08T15:33:26.979Z'
---

## Overview

A vulnerability was found in java-json-tools jackson-coreutils 2.0. Affected by this issue is the function JsonLoader.fromURL of the file src/main/java/com/github/fge/jackson/JsonLoader.java of the component URL Validation. The manipulation results in server-side request forgery. It is possible to launch the attack remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.