CVE-2021-3822 json
Inefficient Regular Expression Complexity in josdejong/jsoneditor
published 2021-09-27 5 y ago modified 2026-06-17 4 mo ago also GHSA-hhfg-6hfc-rvxm , EUVD-2021-2072
- cvss
- 5.3
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 72%
- public exploits
- 0
- none known
Summary
jsoneditor is vulnerable to Inefficient Regular Expression Complexity
Patch / fix
- npm jsoneditor 9.5.6
- josdejong josdejong/jsoneditor 9.5.6
Exploit prediction
1.42% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- huntr.dev https://huntr.dev/bounties/1e3ed803-b7ed-42f1-a4ea-c4c75da9de73 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| GitHub | 3.0 | 5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | jsoneditor | <9.5.6 |
9.5.6 |
Affected products
- josdejong josdejong/jsoneditor
Classification
References
-
github.com
/josdejong/jsoneditor/commit/092e386cf49f2a1450625617da8e0137ed067c3e
web, patch, third-party-advisory
-
huntr.dev
/bounties/1e3ed803-b7ed-42f1-a4ea-c4c75da9de73
web, exploit, patch, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-3822
advisory
-
github.com
/josdejong/jsoneditor
package
Sources
- CVE List CVE-2021-3822
- GitHub Advisory GHSA-hhfg-6hfc-rvxm
- NVD CVE-2021-3822
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.