---
id: CVE-2026-122234
title: jsondiffpatch before 0.7.7 XSS via Array-Move Destination in HTML Formatters
summary: >-
  jsondiffpatch before 0.7.7 contains a cross-site scripting vulnerability that
  allows attackers to inject markup by supplying an unescaped array-move
  destination index in a delta. Attackers who control a delta passed to
  formatters.html.fo…
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-79
vendor: benjamine
product: jsondiffpatch
affected:
  - jsondiffpatch < 0.7.7
published: '2026-11-04'
updated: '2026-11-04'
sourceUpdated: '2026-11-04T21:06:41.734Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-122234'
references:
  - url: >-
      https://github.com/benjamine/jsondiffpatch/security/advisories/GHSA-jhmf-rq89-q58p
    label: GitHub Security Advisory (GHSA-jhmf-rq89-q58p)
  - url: >-
      https://github.com/benjamine/jsondiffpatch/commit/c6b2d97b34bc2356c816d8dd0f8b1c8af16bb6af
  - url: >-
      https://www.vulncheck.com/advisories/jsondiffpatch-before-0.7.7-xss-via-array-move-destination-in-html-formatters
    label: >-
      VulnCheck Advisory: jsondiffpatch before 0.7.7 XSS via Array-Move
      Destination in HTML Formatters
tags:
  - cve.org
ingestedAt: '2026-11-05T21:36:00.592Z'
epss: 0.00179
epssPercentile: 0.07479
---

## Overview

jsondiffpatch before 0.7.7 contains a cross-site scripting vulnerability that allows attackers to inject markup by supplying an unescaped array-move destination index in a delta. Attackers who control a delta passed to formatters.html.format() or formatters.annotated.format() can embed script that executes in the application's origin when output is rendered.

## Affected

- `jsondiffpatch < 0.7.7`

## Remediation

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