Medium

Regular Expression Denial of Service in jsoneditor

  • Disclosed: 29.09.2021
  • Updated: 11.10.2026 10:22

JSON Editor is a web-based tool to view, edit, format, and validate JSON. It has various modes such as a tree editor, a code editor, and a plain text editor. The jsoneditor package is vulnerable to ReDoS (regular expression denial of service). An attacker that is able to provide a crafted element as input to the getInnerText function may cause an application to consume an excessive amount of CPU. Below pinned line using vulnerable regex.

Affected software

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PlatformPackageVulnerable versionsFixed in
npm package jsoneditor < 9.5.6 9.5.6

References

CVSS score 5.3/10
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE)
CWE-1333, CWE-400, CWE-697
Platform
npm
Package
jsoneditor
Disclosed
29.09.2021
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-hhfg-6hfc-rvxm - CC BY 4.0

Vulnerability history: jsoneditor

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
2
First → latest
09.2021 10.2021
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Medium 2

Disclosures per year

  1. 2021: 2
  2. 2022: 0
  3. 2023: 0
  4. 2024: 0
  5. 2025: 0
  6. 2026: 0
  1. Medium · 6.1 CVE-2020-23849 < 9.0.2 9.0.2
  2. Regular Expression Denial of Service in jsoneditor this entry
    Medium · 5.3 CVE-2021-3822 < 9.5.6 9.5.6

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