CVE-2021-3822: Jsoneditoronline Jsoneditor

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

jsoneditor is vulnerable to Inefficient Regular Expression Complexity

Affected products

• Jsoneditoronline Jsoneditor: before 9.5.6 (fixed in 9.5.6)

Published 2021-09-27. Last modified 2026-06-17.