CVE-2021-3822
Inefficient Regular Expression Complexity in josdejong/jsoneditor
jsoneditor is vulnerable to Inefficient Regular Expression Complexity
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Inefficient Regular Expression Complexity in josdejong/jsoneditor
jsoneditor is vulnerable to Inefficient Regular Expression Complexity
- Record
CVE-2021-3822- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-1333
- Updated
- 2026-11-02
EUVDEUVD-2021-2072
jsoneditor is vulnerable to Inefficient Regular Expression Complexity
- Record
EUVD-2021-2072- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hhfg-6hfc-rvxm
Regular Expression Denial of Service in jsoneditor
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.
- Record
GHSA-hhfg-6hfc-rvxm- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-400, CWE-697, CWE-1333
- Updated
- 2026-11-02
NVD
jsoneditor is vulnerable to Inefficient Regular Expression Complexity
- Record
CVE-2021-3822- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-1333, CWE-400
- Updated
- 2026-11-02
OSV
jsoneditor is vulnerable to Inefficient Regular Expression Complexity
- Record
CVE-2021-3822- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-hhfg-6hfc-rvxm
Regular Expression Denial of Service in jsoneditor
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.
- Record
GHSA-hhfg-6hfc-rvxm- CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-1333, CWE-400, CWE-697
- Updated
- 2026-11-02
OSVCLSA-2026-1780879896 No score
TuxCare security update for jsoneditor (2 CVEs)
TuxCare rebuilt jsoneditor to address 2 CVEs. Fixed in 5.19.0-tuxcare.1.
- Record
CLSA-2026-1780879896- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
jsoneditornpm |
before 9.5.6 | 9.5.6 |
jsoneditorTuxCare:npm From an advisory covering 2 CVEs |
5.19.0-tuxcare.0 up to 5.19.0-tuxcare.1, plus listed versions 5.19.0 |
5.19.0-tuxcare.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-3822 is a medium vulnerability (CVSS 5.3) in Josdejong Josdejong/jsoneditor, published September 27, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.42%, the 72nd percentile. Fixed in jsoneditor 9.5.6.